55657945815 has 8 divisors (see below), whose sum is σ = 89052713328. Its totient is φ = 29684237760.

The previous prime is 55657945799. The next prime is 55657945843. The reversal of 55657945815 is 51854975655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55657945815 - 2⁴ = 55657945799 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1855264846 + ... + 1855264875.

It is an arithmetic number, because the mean of its divisors is an integer number (11131589166).

Almost surely, 2^55657945815 is an apocalyptic number.

55657945815 is a deficient number, since it is larger than the sum of its proper divisors (33394767513).

55657945815 is a wasteful number, since it uses less digits than its factorization.

55657945815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710529729.

The product of its digits is 37800000, while the sum is 60.

The spelling of 55657945815 in words is "fifty-five billion, six hundred fifty-seven million, nine hundred forty-five thousand, eight hundred fifteen".