326572172051 has 4 divisors (see below), whose sum is σ = 326725422504. Its totient is φ = 326418921600.

The previous prime is 326572172033. The next prime is 326572172149. The reversal of 326572172051 is 150271275623.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 326572172051 - 2¹⁰ = 326572171027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (326572172021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76622030 + ... + 76626291.

It is an arithmetic number, because the mean of its divisors is an integer number (81681355626).

Almost surely, 2^326572172051 is an apocalyptic number.

326572172051 is a deficient number, since it is larger than the sum of its proper divisors (153250453).

326572172051 is a wasteful number, since it uses less digits than its factorization.

326572172051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153250452.

The product of its (nonzero) digits is 176400, while the sum is 41.

The spelling of 326572172051 in words is "three hundred twenty-six billion, five hundred seventy-two million, one hundred seventy-two thousand, fifty-one".