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15997000141 = 81127777103
BaseRepresentation
bin11101110010111111…
…01101100111001101
31112021212011210202201
432321133231213031
5230230213001031
611203211121501
71104264154243
oct167137554715
945255153681
1015997000141
116869986a81
123125443291
13167c275975
14aba7d0793
15639601d61
hex3b97ed9cd

15997000141 has 8 divisors (see below), whose sum is σ = 16024748544. Its totient is φ = 15969273120.

The previous prime is 15997000139. The next prime is 15997000147. The reversal of 15997000141 is 14100079951.

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 15997000141 - 21 = 15997000139 is a prime.

It is a super-2 number, since 2×159970001412 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15997000141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15997000147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2248596 + ... + 2255698.

It is an arithmetic number, because the mean of its divisors is an integer number (2003093568).

Almost surely, 215997000141 is an apocalyptic number.

15997000141 is the 79993-rd centered pentagonal number.

It is an amenable number.

15997000141 is a deficient number, since it is larger than the sum of its proper divisors (27748403).

15997000141 is an equidigital number, since it uses as much as digits as its factorization.

15997000141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10691.

The product of its (nonzero) digits is 11340, while the sum is 37.

The spelling of 15997000141 in words is "fifteen billion, nine hundred ninety-seven million, one hundred forty-one", and thus it is an aban number.

Divisors: 1 811 2777 7103 2252147 5760533 19725031 15997000141