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102560407445 = 520512081489
BaseRepresentation
bin101111110000100010…
…0111001111110010101
3100210201121111111222002
41133201010321332111
53140020431014240
6115040545245045
710260354036146
oct1374104717625
9323647444862
10102560407445
113a54a749111
1217a63333785
1398960cc432
144d6d117acd
152a03de8d15
hex17e1139f95

102560407445 has 4 divisors (see below), whose sum is σ = 123072488940. Its totient is φ = 82048325952.

The previous prime is 102560407441. The next prime is 102560407487. The reversal of 102560407445 is 544704065201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544704065201 = 2831924749347.

It can be written as a sum of positive squares in 2 ways, for example, as 77151728644 + 25408678801 = 277762^2 + 159401^2 .

It is a cyclic number.

It is not a de Polignac number, because 102560407445 - 22 = 102560407441 is a prime.

It is a super-2 number, since 2×1025604074452 (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102560407399 and 102560407408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102560407441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10256040740 + ... + 10256040749.

It is an arithmetic number, because the mean of its divisors is an integer number (30768122235).

Almost surely, 2102560407445 is an apocalyptic number.

It is an amenable number.

102560407445 is a deficient number, since it is larger than the sum of its proper divisors (20512081495).

102560407445 is an equidigital number, since it uses as much as digits as its factorization.

102560407445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20512081494.

The product of its (nonzero) digits is 134400, while the sum is 38.

The spelling of 102560407445 in words is "one hundred two billion, five hundred sixty million, four hundred seven thousand, four hundred forty-five".

Divisors: 1 5 20512081489 102560407445