618813512955 has 48 divisors (see below), whose sum is σ = 1170823590144. Its totient is φ = 299850411840.

The previous prime is 618813512939. The next prime is 618813512987. The reversal of 618813512955 is 559215318816.

618813512955 is a `hidden beast` number, since 61 + 8 + 8 + 13 + 512 + 9 + 55 = 666.

It is not a de Polignac number, because 618813512955 - 2⁴ = 618813512939 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 450202 + ... + 1200128.

It is an arithmetic number, because the mean of its divisors is an integer number (24392158128).

Almost surely, 2^618813512955 is an apocalyptic number.

618813512955 is a deficient number, since it is larger than the sum of its proper divisors (552010077189).

618813512955 is a wasteful number, since it uses less digits than its factorization.

618813512955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751616 (or 751613 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 54.

The spelling of 618813512955 in words is "six hundred eighteen billion, eight hundred thirteen million, five hundred twelve thousand, nine hundred fifty-five".