15115516655 has 16 divisors (see below), whose sum is σ = 18451200000. Its totient is φ = 11884354560.

The previous prime is 15115516643. The next prime is 15115516657. The reversal of 15115516655 is 55661551151.

It is not a de Polignac number, because 15115516655 - 2⁸ = 15115516399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15115516657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361106 + ... + 400784.

It is an arithmetic number, because the mean of its divisors is an integer number (1153200000).

Almost surely, 2^15115516655 is an apocalyptic number.

15115516655 is a deficient number, since it is larger than the sum of its proper divisors (3335683345).

15115516655 is a wasteful number, since it uses less digits than its factorization.

15115516655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40994.

The product of its digits is 112500, while the sum is 41.

The spelling of 15115516655 in words is "fifteen billion, one hundred fifteen million, five hundred sixteen thousand, six hundred fifty-five".