21107577445008 has 40 divisors (see below), whose sum is σ = 54721957930656. Its totient is φ = 7010820499200.

The previous prime is 21107577445007. The next prime is 21107577445021. The reversal of 21107577445008 is 80054477570112.

It is not an unprimeable number, because it can be changed into a prime (21107577445007) 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, 782444158 + ... + 782471133.

Almost surely, 2^{21107577445008} is an apocalyptic number.

It is an amenable number.

21107577445008 is an abundant number, since it is smaller than the sum of its proper divisors (33614380485648).

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

21107577445008 is a wasteful number, since it uses less digits than its factorization.

21107577445008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564915583 (or 1564915577 counting only the distinct ones).

The product of its (nonzero) digits is 2195200, while the sum is 51.

The spelling of 21107577445008 in words is "twenty-one trillion, one hundred seven billion, five hundred seventy-seven million, four hundred forty-five thousand, eight".