612406061643636 has 72 divisors (see below), whose sum is σ = 1754847779004320. Its totient is φ = 178515127278144.

The previous prime is 612406061643613. The next prime is 612406061643637. The reversal of 612406061643636 is 636346160604216.

612406061643636 is a `hidden beast` number, since 6 + 1 + 24 + 0 + 606 + 1 + 6 + 4 + 3 + 6 + 3 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612406061643637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34435779550 + ... + 34435797333.

Almost surely, 2^{612406061643636} is an apocalyptic number.

It is an amenable number.

612406061643636 is an abundant number, since it is smaller than the sum of its proper divisors (1142441717360684).

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

612406061643636 is a wasteful number, since it uses less digits than its factorization.

612406061643636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68871576925 (or 68871576920 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 54.

The spelling of 612406061643636 in words is "six hundred twelve trillion, four hundred six billion, sixty-one million, six hundred forty-three thousand, six hundred thirty-six".