2393707159921 has 81 divisors (see below), whose sum is σ = 3115390336569. Its totient is φ = 1832457488400.

The previous prime is 2393707159913. The next prime is 2393707159933. The reversal of 2393707159921 is 1299517073932.

The square root of 2393707159921 is 1547161.

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

It is not a de Polignac number, because 2393707159921 - 2³ = 2393707159913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2393707159321) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 8458329046 + ... + 8458329328.

Almost surely, 2^{2393707159921} is an apocalyptic number.

2393707159921 is the 1547161-st square number.

2393707159921 is the 773581-st centered octagonal number.

It is an amenable number.

2393707159921 is a deficient number, since it is larger than the sum of its proper divisors (721683176648).

2393707159921 is an frugal number, since it uses more digits than its factorization.

2393707159921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 6429780, while the sum is 58.

The spelling of 2393707159921 in words is "two trillion, three hundred ninety-three billion, seven hundred seven million, one hundred fifty-nine thousand, nine hundred twenty-one".