21715032104000 has 56 divisors (see below), whose sum is σ = 53777277025368. Its totient is φ = 8686012838400.

The previous prime is 21715032103981. The next prime is 21715032104119. The reversal of 21715032104000 is 40123051712.

It can be written as a sum of positive squares in 4 ways, for example, as 452530671616 + 21262501432384 = 672704^2 + 4611128^2 .

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, 1357181507 + ... + 1357197506.

Almost surely, 2^{21715032104000} is an apocalyptic number.

21715032104000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21715032104000 is an abundant number, since it is smaller than the sum of its proper divisors (32062244921368).

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

21715032104000 is an equidigital number, since it uses as much as digits as its factorization.

21715032104000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714379040 (or 2714379020 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

Adding to 21715032104000 its reverse (40123051712), we get a palindrome (21755155155712).

The spelling of 21715032104000 in words is "twenty-one trillion, seven hundred fifteen billion, thirty-two million, one hundred four thousand".