2536964721 has 24 divisors (see below), whose sum is σ = 3860550720. Its totient is φ = 1600973856.

The previous prime is 2536964713. The next prime is 2536964809. The reversal of 2536964721 is 1274696352.

2536964721 is a `hidden beast` number, since 2 + 536 + 96 + 4 + 7 + 21 = 666.

It is not a de Polignac number, because 2536964721 - 2³ = 2536964713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2536966721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 228331 + ... + 239183.

It is an arithmetic number, because the mean of its divisors is an integer number (160856280).

Almost surely, 2^2536964721 is an apocalyptic number.

It is an amenable number.

2536964721 is a deficient number, since it is larger than the sum of its proper divisors (1323585999).

2536964721 is a wasteful number, since it uses less digits than its factorization.

2536964721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12245 (or 12242 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 2536964721 is about 50368.2908286553. The cubic root of 2536964721 is about 1363.8652873110.

The spelling of 2536964721 in words is "two billion, five hundred thirty-six million, nine hundred sixty-four thousand, seven hundred twenty-one".