2375639598721 has 9 divisors (see below), whose sum is σ = 2385991081411. Its totient is φ = 2365332852064.

The previous prime is 2375639598677. The next prime is 2375639598743. The reversal of 2375639598721 is 1278959365732.

The square root of 2375639598721 is 1541311.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2303987016321 + 71652582400 = 1517889^2 + 267680^2 .

It is not a de Polignac number, because 2375639598721 - 2¹⁵ = 2375639565953 is a prime.

It is a super-2 number, since 2×2375639598721² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2375639598781) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 368370105 + ... + 368376553.

Almost surely, 2^{2375639598721} is an apocalyptic number.

2375639598721 is the 1541311-st square number.

2375639598721 is the 770656-th centered octagonal number.

It is an amenable number.

2375639598721 is a deficient number, since it is larger than the sum of its proper divisors (10351482690).

2375639598721 is an frugal number, since it uses more digits than its factorization.

2375639598721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13376 (or 6688 counting only the distinct ones).

The product of its digits is 171460800, while the sum is 67.

The spelling of 2375639598721 in words is "two trillion, three hundred seventy-five billion, six hundred thirty-nine million, five hundred ninety-eight thousand, seven hundred twenty-one".