15930478655 has 64 divisors (see below), whose sum is σ = 25106672640. Its totient is φ = 9421526016.

The previous prime is 15930478651. The next prime is 15930478703. The reversal of 15930478655 is 55687403951.

It is a happy number.

It is a Cunningham number, because it is equal to 126216²-1.

It is not a de Polignac number, because 15930478655 - 2² = 15930478651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15930478597 and 15930478606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15930478651) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 618464 + ... + 643706.

It is an arithmetic number, because the mean of its divisors is an integer number (392291760).

Almost surely, 2^15930478655 is an apocalyptic number.

15930478655 is a deficient number, since it is larger than the sum of its proper divisors (9176193985).

15930478655 is a wasteful number, since it uses less digits than its factorization.

15930478655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25360.

The product of its (nonzero) digits is 4536000, while the sum is 53.

The spelling of 15930478655 in words is "fifteen billion, nine hundred thirty million, four hundred seventy-eight thousand, six hundred fifty-five".