21532473622 has 16 divisors (see below), whose sum is σ = 35259494400. Its totient is φ = 9780672040.

The previous prime is 21532473617. The next prime is 21532473623. The reversal of 21532473622 is 22637423512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21532473623) 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, 308422 + ... + 371737.

It is an arithmetic number, because the mean of its divisors is an integer number (2203718400).

Almost surely, 2^21532473622 is an apocalyptic number.

21532473622 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21532473622 is a deficient number, since it is larger than the sum of its proper divisors (13727020778).

21532473622 is a wasteful number, since it uses less digits than its factorization.

21532473622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681611.

The product of its digits is 120960, while the sum is 37.

The spelling of 21532473622 in words is "twenty-one billion, five hundred thirty-two million, four hundred seventy-three thousand, six hundred twenty-two".