612456681492 has 24 divisors (see below), whose sum is σ = 1587850656000. Its totient is φ = 204152227128.

The previous prime is 612456681469. The next prime is 612456681509. The reversal of 612456681492 is 294186654216.

It is a happy number.

612456681492 is a `hidden beast` number, since 6 + 1 + 24 + 56 + 6 + 81 + 492 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2835447492 + ... + 2835447707.

It is an arithmetic number, because the mean of its divisors is an integer number (66160444000).

Almost surely, 2^612456681492 is an apocalyptic number.

It is an amenable number.

612456681492 is an abundant number, since it is smaller than the sum of its proper divisors (975393974508).

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

612456681492 is a wasteful number, since it uses less digits than its factorization.

612456681492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5670895212 (or 5670895204 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The spelling of 612456681492 in words is "six hundred twelve billion, four hundred fifty-six million, six hundred eighty-one thousand, four hundred ninety-two".