551655665015 has 32 divisors (see below), whose sum is σ = 857634731520. Its totient is φ = 330801957504.

The previous prime is 551655664981. The next prime is 551655665083. The reversal of 551655665015 is 510566556155.

It is a cyclic number.

It is not a de Polignac number, because 551655665015 - 2⁸ = 551655664759 is a prime.

It is a congruent number.

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, 31897409 + ... + 31914698.

It is an arithmetic number, because the mean of its divisors is an integer number (26801085360).

Almost surely, 2^551655665015 is an apocalyptic number.

551655665015 is a deficient number, since it is larger than the sum of its proper divisors (305979066505).

551655665015 is a wasteful number, since it uses less digits than its factorization.

551655665015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63812151.

The product of its (nonzero) digits is 3375000, while the sum is 50.

The spelling of 551655665015 in words is "five hundred fifty-one billion, six hundred fifty-five million, six hundred sixty-five thousand, fifteen".