612730406385 has 64 divisors (see below), whose sum is σ = 1095432019200. Its totient is φ = 324951035904.

The previous prime is 612730406371. The next prime is 612730406389. The reversal of 612730406385 is 583604037216.

612730406385 is a `hidden beast` number, since 6 + 1 + 2 + 7 + 3 + 0 + 4 + 0 + 638 + 5 = 666.

It is not a de Polignac number, because 612730406385 - 2⁸ = 612730406129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 612730406385.

It is not an unprimeable number, because it can be changed into a prime (612730406389) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 84127954 + ... + 84135236.

It is an arithmetic number, because the mean of its divisors is an integer number (17116125300).

Almost surely, 2^612730406385 is an apocalyptic number.

It is an amenable number.

612730406385 is a deficient number, since it is larger than the sum of its proper divisors (482701612815).

612730406385 is a wasteful number, since it uses less digits than its factorization.

612730406385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10719 (or 10713 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 612730406385 in words is "six hundred twelve billion, seven hundred thirty million, four hundred six thousand, three hundred eighty-five".