22742772640 has 96 divisors (see below), whose sum is σ = 61432801920. Its totient is φ = 7794054144.

The previous prime is 22742772629. The next prime is 22742772641. The reversal of 22742772640 is 4627724722.

It is not an unprimeable number, because it can be changed into a prime (22742772641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4722874 + ... + 4727686.

It is an arithmetic number, because the mean of its divisors is an integer number (639925020).

Almost surely, 2^22742772640 is an apocalyptic number.

22742772640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22742772640 is an abundant number, since it is smaller than the sum of its proper divisors (38690029280).

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

22742772640 is a wasteful number, since it uses less digits than its factorization.

22742772640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9054 (or 9046 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 43.

The spelling of 22742772640 in words is "twenty-two billion, seven hundred forty-two million, seven hundred seventy-two thousand, six hundred forty".