2172597872813 has 8 divisors (see below), whose sum is σ = 2187568936800. Its totient is φ = 2157670907280.

The previous prime is 2172597872803. The next prime is 2172597872869. The reversal of 2172597872813 is 3182787952712.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2172597872813 - 2¹² = 2172597868717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172597872803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10925738 + ... + 11122811.

It is an arithmetic number, because the mean of its divisors is an integer number (273446117100).

Almost surely, 2^{2172597872813} is an apocalyptic number.

It is an amenable number.

2172597872813 is a deficient number, since it is larger than the sum of its proper divisors (14971063987).

2172597872813 is a wasteful number, since it uses less digits than its factorization.

2172597872813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22049227.

The product of its digits is 23708160, while the sum is 62.

The spelling of 2172597872813 in words is "two trillion, one hundred seventy-two billion, five hundred ninety-seven million, eight hundred seventy-two thousand, eight hundred thirteen".