15880427477465 has 32 divisors (see below), whose sum is σ = 19395377164800. Its totient is φ = 12480142371840.

The previous prime is 15880427477449. The next prime is 15880427477489. The reversal of 15880427477465 is 56477472408851.

It is not a de Polignac number, because 15880427477465 - 2⁴ = 15880427477449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15880427477395 and 15880427477404.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121512926 + ... + 121643544.

It is an arithmetic number, because the mean of its divisors is an integer number (606105536400).

Almost surely, 2^{15880427477465} is an apocalyptic number.

It is an amenable number.

15880427477465 is a deficient number, since it is larger than the sum of its proper divisors (3514949687335).

15880427477465 is a wasteful number, since it uses less digits than its factorization.

15880427477465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132257.

The product of its (nonzero) digits is 421478400, while the sum is 68.

The spelling of 15880427477465 in words is "fifteen trillion, eight hundred eighty billion, four hundred twenty-seven million, four hundred seventy-seven thousand, four hundred sixty-five".