22051656004 has 27 divisors (see below), whose sum is σ = 44895103743. Its totient is φ = 9449818728.

The previous prime is 22051655981. The next prime is 22051656017. The reversal of 22051656004 is 40065615022.

The square root of 22051656004 is 148498.

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

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2073669 + ... + 2084275.

Almost surely, 2^22051656004 is an apocalyptic number.

22051656004 is the 148498-th square number.

It is an amenable number.

22051656004 is an abundant number, since it is smaller than the sum of its proper divisors (22843447739).

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

22051656004 is an frugal number, since it uses more digits than its factorization.

22051656004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21232 (or 10616 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Multiplying 22051656004 by its product of nonzero digits (14400), we get a square (317543846457600 = 17819760²).

It can be divided in two parts, 2205165 and 6004, that added together give a square (2211169 = 1487²).

The spelling of 22051656004 in words is "twenty-two billion, fifty-one million, six hundred fifty-six thousand, four".