22721377401472 has 32 divisors (see below), whose sum is σ = 46725413212800. Its totient is φ = 10994214869760.

The previous prime is 22721377401449. The next prime is 22721377401479. The reversal of 22721377401472 is 27410477312722.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (22721377401479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2863072822 + ... + 2863080757.

It is an arithmetic number, because the mean of its divisors is an integer number (1460169162900).

Almost surely, 2^{22721377401472} is an apocalyptic number.

It is an amenable number.

22721377401472 is an abundant number, since it is smaller than the sum of its proper divisors (24004035811328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22721377401472 is an equidigital number, since it uses as much as digits as its factorization.

22721377401472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5726153624 (or 5726153612 counting only the distinct ones).

The product of its (nonzero) digits is 1843968, while the sum is 49.

The spelling of 22721377401472 in words is "twenty-two trillion, seven hundred twenty-one billion, three hundred seventy-seven million, four hundred one thousand, four hundred seventy-two".