55651555515 has 16 divisors (see below), whose sum is σ = 91449043488. Its totient is φ = 28878644736.

The previous prime is 55651555507. The next prime is 55651555529. The reversal of 55651555515 is 51555515655.

It is not a de Polignac number, because 55651555515 - 2³ = 55651555507 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50135982 + ... + 50137091.

It is an arithmetic number, because the mean of its divisors is an integer number (5715565218).

Almost surely, 2^55651555515 is an apocalyptic number.

55651555515 is a deficient number, since it is larger than the sum of its proper divisors (35797487973).

55651555515 is a wasteful number, since it uses less digits than its factorization.

55651555515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100273118.

The product of its digits is 2343750, while the sum is 48.

The spelling of 55651555515 in words is "fifty-five billion, six hundred fifty-one million, five hundred fifty-five thousand, five hundred fifteen".