2172607612636 has 24 divisors (see below), whose sum is σ = 3934115982720. Its totient is φ = 1048592513472.

The previous prime is 2172607612603. The next prime is 2172607612663. The reversal of 2172607612636 is 6362167062712.

It is a self number, because there is not a number n which added to its sum of digits gives 2172607612636.

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, 1770540 + ... + 2734963.

It is an arithmetic number, because the mean of its divisors is an integer number (163921499280).

Almost surely, 2^{2172607612636} is an apocalyptic number.

It is an amenable number.

2172607612636 is a deficient number, since it is larger than the sum of its proper divisors (1761508370084).

2172607612636 is a wasteful number, since it uses less digits than its factorization.

2172607612636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4509693 (or 4509691 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 49.

The spelling of 2172607612636 in words is "two trillion, one hundred seventy-two billion, six hundred seven million, six hundred twelve thousand, six hundred thirty-six".