245618731764 has 72 divisors (see below), whose sum is σ = 751304369088. Its totient is φ = 66048733440.

The previous prime is 245618731727. The next prime is 245618731793. The reversal of 245618731764 is 467137816542.

245618731764 is a `hidden beast` number, since 2 + 4 + 5 + 618 + 7 + 3 + 17 + 6 + 4 = 666.

It is a super-2 number, since 2×245618731764² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 245618731764.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28662702 + ... + 28671269.

It is an arithmetic number, because the mean of its divisors is an integer number (10434782904).

Almost surely, 2^245618731764 is an apocalyptic number.

It is an amenable number.

245618731764 is an abundant number, since it is smaller than the sum of its proper divisors (505685637324).

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

245618731764 is a wasteful number, since it uses less digits than its factorization.

245618731764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57334005 (or 57334000 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The spelling of 245618731764 in words is "two hundred forty-five billion, six hundred eighteen million, seven hundred thirty-one thousand, seven hundred sixty-four".