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102912086745049 = 2930011182503381
BaseRepresentation
bin10111011001100100010110…
…010111111001111111011001
3111111101022002021021201200011
4113121210112113321333121
5101442102423201320144
61002513054320041521
730451103306102521
oct2731442627717731
9444338067251604
10102912086745049
112a87785306724a
12b6610757632a1
13455675028045a
141b5ad86006681
15bd6ea5e81a34
hex5d99165f9fd9

102912086745049 has 8 divisors (see below), whose sum is σ = 106496254582920. Its totient is φ = 99330283920000.

The previous prime is 102912086745047. The next prime is 102912086745133. The reversal of 102912086745049 is 940547680219201.

It can be written as a sum of positive squares in 4 ways, for example, as 26123547654400 + 76788539090649 = 5111120^2 + 8762907^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102912086745049 - 21 = 102912086745047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102912086744984 and 102912086745002.

It is not an unprimeable number, because it can be changed into a prime (102912086745047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591164662 + ... + 591338719.

It is an arithmetic number, because the mean of its divisors is an integer number (13312031822865).

Almost surely, 2102912086745049 is an apocalyptic number.

It is an amenable number.

102912086745049 is a deficient number, since it is larger than the sum of its proper divisors (3584167837871).

102912086745049 is a wasteful number, since it uses less digits than its factorization.

102912086745049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182506411.

The product of its (nonzero) digits is 8709120, while the sum is 58.

The spelling of 102912086745049 in words is "one hundred two trillion, nine hundred twelve billion, eighty-six million, seven hundred forty-five thousand, forty-nine".

Divisors: 1 29 3001 87029 1182503381 34292598049 3548692646381 102912086745049