21732285522 has 16 divisors (see below), whose sum is σ = 43474967712. Its totient is φ = 7242362400.

The previous prime is 21732285473. The next prime is 21732285541. The reversal of 21732285522 is 22558223712.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405888 + ... + 456299.

It is an arithmetic number, because the mean of its divisors is an integer number (2717185482).

Almost surely, 2^21732285522 is an apocalyptic number.

21732285522 is an abundant number, since it is smaller than the sum of its proper divisors (21742682190).

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

21732285522 is a wasteful number, since it uses less digits than its factorization.

21732285522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866393.

The product of its digits is 134400, while the sum is 39.

The spelling of 21732285522 in words is "twenty-one billion, seven hundred thirty-two million, two hundred eighty-five thousand, five hundred twenty-two".