20125600616400 has 60 divisors (see below), whose sum is σ = 64469007311712. Its totient is φ = 5366826830720.

The previous prime is 20125600616399. The next prime is 20125600616419. The reversal of 20125600616400 is 461600652102.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8385665724 + ... + 8385668123.

Almost surely, 2^{20125600616400} is an apocalyptic number.

20125600616400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20125600616400 is an abundant number, since it is smaller than the sum of its proper divisors (44343406695312).

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

20125600616400 is a wasteful number, since it uses less digits than its factorization.

20125600616400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16771333868 (or 16771333857 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 20125600616400 in words is "twenty trillion, one hundred twenty-five billion, six hundred million, six hundred sixteen thousand, four hundred".