21840459722696 has 32 divisors (see below), whose sum is σ = 42233615568000. Its totient is φ = 10580632042176.

The previous prime is 21840459722693. The next prime is 21840459722819. The reversal of 21840459722696 is 69622795404812.

It is not an unprimeable number, because it can be changed into a prime (21840459722693) 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, 154291886 + ... + 154433373.

It is an arithmetic number, because the mean of its divisors is an integer number (1319800486500).

Almost surely, 2^{21840459722696} is an apocalyptic number.

It is an amenable number.

21840459722696 is a deficient number, since it is larger than the sum of its proper divisors (20393155845304).

21840459722696 is a wasteful number, since it uses less digits than its factorization.

21840459722696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308725541 (or 308725537 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 65.

The spelling of 21840459722696 in words is "twenty-one trillion, eight hundred forty billion, four hundred fifty-nine million, seven hundred twenty-two thousand, six hundred ninety-six".