618657751812 has 48 divisors (see below), whose sum is σ = 1456567483392. Its totient is φ = 204364897440.

The previous prime is 618657751759. The next prime is 618657751847. The reversal of 618657751812 is 218157756816.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196993 + ... + 1129655.

It is an arithmetic number, because the mean of its divisors is an integer number (30345155904).

Almost surely, 2^618657751812 is an apocalyptic number.

It is an amenable number.

618657751812 is an abundant number, since it is smaller than the sum of its proper divisors (837909731580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618657751812 is a wasteful number, since it uses less digits than its factorization.

618657751812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933168 (or 933166 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 57.

The spelling of 618657751812 in words is "six hundred eighteen billion, six hundred fifty-seven million, seven hundred fifty-one thousand, eight hundred twelve".