20507125056736 has 24 divisors (see below), whose sum is σ = 40373610236064. Its totient is φ = 10253509758720.

The previous prime is 20507125056673. The next prime is 20507125056749. The reversal of 20507125056736 is 63765052170502.

It is a happy number.

It is a super-3 number, since 3×20507125056736³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20507125056736.

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 3 ways as a sum of consecutive naturals, for example, 5089596 + ... + 8180356.

It is an arithmetic number, because the mean of its divisors is an integer number (1682233759836).

Almost surely, 2^{20507125056736} is an apocalyptic number.

It is an amenable number.

20507125056736 is a deficient number, since it is larger than the sum of its proper divisors (19866485179328).

20507125056736 is a wasteful number, since it uses less digits than its factorization.

20507125056736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3298114 (or 3298106 counting only the distinct ones).

The product of its (nonzero) digits is 2646000, while the sum is 49.

The spelling of 20507125056736 in words is "twenty trillion, five hundred seven billion, one hundred twenty-five million, fifty-six thousand, seven hundred thirty-six".