19997876675520 has 168 divisors, whose sum is σ = 70082182025856. Its totient is φ = 5232148826112.

The previous prime is 19997876675509. The next prime is 19997876675531. The reversal of 19997876675520 is 2557667879991.

19997876675520 is a `hidden beast` number, since 1 + 9 + 9 + 9 + 7 + 87 + 6 + 6 + 7 + 5 + 520 = 666.

It is an interprime number because it is at equal distance from previous prime (19997876675509) and next prime (19997876675531).

It is a self number, because there is not a number n which added to its sum of digits gives 19997876675520.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65354032 + ... + 65659311.

It is an arithmetic number, because the mean of its divisors is an integer number (417155845392).

Almost surely, 2^{19997876675520} is an apocalyptic number.

19997876675520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19997876675520 is an abundant number, since it is smaller than the sum of its proper divisors (50084305350336).

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

19997876675520 is a wasteful number, since it uses less digits than its factorization.

19997876675520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131013419 (or 131013406 counting only the distinct ones).

The product of its (nonzero) digits is 3600676800, while the sum is 81.

The spelling of 19997876675520 in words is "nineteen trillion, nine hundred ninety-seven billion, eight hundred seventy-six million, six hundred seventy-five thousand, five hundred twenty".