612405654564 has 96 divisors (see below), whose sum is σ = 1652701478400. Its totient is φ = 174545314560.

The previous prime is 612405654557. The next prime is 612405654577. The reversal of 612405654564 is 465456504216.

It is a happy number.

It is a super-2 number, since 2×612405654564² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 529737 + ... + 1226960.

It is an arithmetic number, because the mean of its divisors is an integer number (17215640400).

Almost surely, 2^612405654564 is an apocalyptic number.

It is an amenable number.

612405654564 is an abundant number, since it is smaller than the sum of its proper divisors (1040295823836).

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

612405654564 is a wasteful number, since it uses less digits than its factorization.

612405654564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756873 (or 1756871 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 48.

The spelling of 612405654564 in words is "six hundred twelve billion, four hundred five million, six hundred fifty-four thousand, five hundred sixty-four".