15556967655 has 16 divisors (see below), whose sum is σ = 24896525280. Its totient is φ = 8295257088.

The previous prime is 15556967641. The next prime is 15556967659. The reversal of 15556967655 is 55676965551.

It is not a de Polignac number, because 15556967655 - 2²⁰ = 15555919079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15556967659) 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, 38722 + ... + 180591.

It is an arithmetic number, because the mean of its divisors is an integer number (1556032830).

Almost surely, 2^15556967655 is an apocalyptic number.

15556967655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15556967655 is a deficient number, since it is larger than the sum of its proper divisors (9339557625).

15556967655 is a wasteful number, since it uses less digits than its factorization.

15556967655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224050.

The product of its digits is 42525000, while the sum is 60.

The spelling of 15556967655 in words is "fifteen billion, five hundred fifty-six million, nine hundred sixty-seven thousand, six hundred fifty-five".