19804802518712 has 32 divisors (see below), whose sum is σ = 37512277027680. Its totient is φ = 9801619660800.

The previous prime is 19804802518679. The next prime is 19804802518727. The reversal of 19804802518712 is 21781520840891.

It is a super-2 number, since 2×19804802518712² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3946289 + ... + 7428512.

It is an arithmetic number, because the mean of its divisors is an integer number (1172258657115).

Almost surely, 2^{19804802518712} is an apocalyptic number.

It is an amenable number.

19804802518712 is a deficient number, since it is larger than the sum of its proper divisors (17707474508968).

19804802518712 is a wasteful number, since it uses less digits than its factorization.

19804802518712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11377023 (or 11377019 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 56.

The spelling of 19804802518712 in words is "nineteen trillion, eight hundred four billion, eight hundred two million, five hundred eighteen thousand, seven hundred twelve".