2175221052764 has 24 divisors (see below), whose sum is σ = 3871111093920. Its totient is φ = 1069284513024.

The previous prime is 2175221052757. The next prime is 2175221052841. The reversal of 2175221052764 is 4672501225712.

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, 11808584 + ... + 11991375.

It is an arithmetic number, because the mean of its divisors is an integer number (161296295580).

Almost surely, 2^{2175221052764} is an apocalyptic number.

It is an amenable number.

2175221052764 is a deficient number, since it is larger than the sum of its proper divisors (1695890041156).

2175221052764 is a wasteful number, since it uses less digits than its factorization.

2175221052764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23800349 (or 23800347 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 44.

The spelling of 2175221052764 in words is "two trillion, one hundred seventy-five billion, two hundred twenty-one million, fifty-two thousand, seven hundred sixty-four".