21074691159600 has 120 divisors (see below), whose sum is σ = 72702280787472. Its totient is φ = 5187616281600.

The previous prime is 21074691159553. The next prime is 21074691159619. The reversal of 21074691159600 is 695119647012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 675455271 + ... + 675486470.

Almost surely, 2^{21074691159600} is an apocalyptic number.

21074691159600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21074691159600 is an abundant number, since it is smaller than the sum of its proper divisors (51627589627872).

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

21074691159600 is a wasteful number, since it uses less digits than its factorization.

21074691159600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350941775 (or 1350941764 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 51.

The spelling of 21074691159600 in words is "twenty-one trillion, seventy-four billion, six hundred ninety-one million, one hundred fifty-nine thousand, six hundred".