15617056655 has 16 divisors (see below), whose sum is σ = 19393564320. Its totient is φ = 12058553472.

The previous prime is 15617056643. The next prime is 15617056657. The reversal of 15617056655 is 55665071651.

It is a cyclic number.

It is not a de Polignac number, because 15617056655 - 2⁶ = 15617056591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15617056657) 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, 427157 + ... + 462273.

It is an arithmetic number, because the mean of its divisors is an integer number (1212097770).

Almost surely, 2^15617056655 is an apocalyptic number.

15617056655 is a deficient number, since it is larger than the sum of its proper divisors (3776507665).

15617056655 is a wasteful number, since it uses less digits than its factorization.

15617056655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38218.

The product of its (nonzero) digits is 945000, while the sum is 47.

The spelling of 15617056655 in words is "fifteen billion, six hundred seventeen million, fifty-six thousand, six hundred fifty-five".