21113437907060 has 12 divisors (see below), whose sum is σ = 44338219604868. Its totient is φ = 8445375162816.

The previous prime is 21113437906927. The next prime is 21113437907143. The reversal of 21113437907060 is 6070973431112.

It can be written as a sum of positive squares in 2 ways, for example, as 10981363226596 + 10132074680464 = 3313814^2 + 3183092^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527835947657 + ... + 527835947696.

It is an arithmetic number, because the mean of its divisors is an integer number (3694851633739).

Almost surely, 2^{21113437907060} is an apocalyptic number.

21113437907060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21113437907060 is an abundant number, since it is smaller than the sum of its proper divisors (23224781697808).

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

21113437907060 is a wasteful number, since it uses less digits than its factorization.

21113437907060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055671895362 (or 1055671895360 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 44.

The spelling of 21113437907060 in words is "twenty-one trillion, one hundred thirteen billion, four hundred thirty-seven million, nine hundred seven thousand, sixty".