255553768515 has 16 divisors (see below), whose sum is σ = 414487209888. Its totient is φ = 134428283136.

The previous prime is 255553768493. The next prime is 255553768567. The reversal of 255553768515 is 515867355552.

It is a happy number.

It is not a de Polignac number, because 255553768515 - 2⁶ = 255553768451 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, 116690124 + ... + 116692313.

It is an arithmetic number, because the mean of its divisors is an integer number (25905450618).

Almost surely, 2^255553768515 is an apocalyptic number.

255553768515 is a deficient number, since it is larger than the sum of its proper divisors (158933441373).

255553768515 is a wasteful number, since it uses less digits than its factorization.

255553768515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233382518.

The product of its digits is 31500000, while the sum is 57.

The spelling of 255553768515 in words is "two hundred fifty-five billion, five hundred fifty-three million, seven hundred sixty-eight thousand, five hundred fifteen".