21374522792 has 32 divisors (see below), whose sum is σ = 45809193600. Its totient is φ = 9159180864.

The previous prime is 21374522791. The next prime is 21374522801. The reversal of 21374522792 is 29722547312.

It is not an unprimeable number, because it can be changed into a prime (21374522791) 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, 428213 + ... + 475515.

It is an arithmetic number, because the mean of its divisors is an integer number (1431537300).

Almost surely, 2^21374522792 is an apocalyptic number.

It is an amenable number.

21374522792 is an abundant number, since it is smaller than the sum of its proper divisors (24434670808).

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

21374522792 is a wasteful number, since it uses less digits than its factorization.

21374522792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55385 (or 55381 counting only the distinct ones).

The product of its digits is 423360, while the sum is 44.

The spelling of 21374522792 in words is "twenty-one billion, three hundred seventy-four million, five hundred twenty-two thousand, seven hundred ninety-two".