612564425451 has 160 divisors (see below), whose sum is σ = 1033954099200. Its totient is φ = 359745403680.

The previous prime is 612564425443. The next prime is 612564425513. The reversal of 612564425451 is 154524465216.

612564425451 is a `hidden beast` number, since 6 + 1 + 2 + 5 + 64 + 42 + 545 + 1 = 666.

It is not a de Polignac number, because 612564425451 - 2³ = 612564425443 is a prime.

It is a super-2 number, since 2×612564425451² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 612564425397 and 612564425406.

It is not an unprimeable number, because it can be changed into a prime (612564425051) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1009166790 + ... + 1009167396.

It is an arithmetic number, because the mean of its divisors is an integer number (6462213120).

Almost surely, 2^612564425451 is an apocalyptic number.

612564425451 is a deficient number, since it is larger than the sum of its proper divisors (421389673749).

612564425451 is an frugal number, since it uses more digits than its factorization.

612564425451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 759 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 45.

The spelling of 612564425451 in words is "six hundred twelve billion, five hundred sixty-four million, four hundred twenty-five thousand, four hundred fifty-one".