19920662099520 has 672 divisors, whose sum is σ = 81375435042048. Its totient is φ = 4089440452608.

The previous prime is 19920662099497. The next prime is 19920662099551. The reversal of 19920662099520 is 2599026602991.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 22186029 + ... + 23066451.

It is an arithmetic number, because the mean of its divisors is an integer number (121094397384).

Almost surely, 2^{19920662099520} is an apocalyptic number.

19920662099520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19920662099520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40687717521024).

19920662099520 is an abundant number, since it is smaller than the sum of its proper divisors (61454772942528).

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

19920662099520 is a wasteful number, since it uses less digits than its factorization.

19920662099520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880507 (or 880490 counting only the distinct ones).

The product of its (nonzero) digits is 9447840, while the sum is 60.

The spelling of 19920662099520 in words is "nineteen trillion, nine hundred twenty billion, six hundred sixty-two million, ninety-nine thousand, five hundred twenty".