19996939766160 has 960 divisors, whose sum is σ = 82503286594560. Its totient is φ = 4236446269440.

The previous prime is 19996939766123. The next prime is 19996939766183. The reversal of 19996939766160 is 6166793969991.

19996939766160 is a `hidden beast` number, since 1 + 9 + 9 + 9 + 6 + 9 + 397 + 66 + 160 = 666.

It is a super-2 number, since 2×19996939766160² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19996939766160.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 8571340354 + ... + 8571342686.

It is an arithmetic number, because the mean of its divisors is an integer number (85940923536).

Almost surely, 2^{19996939766160} is an apocalyptic number.

19996939766160 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 19996939766160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41251643297280).

19996939766160 is an abundant number, since it is smaller than the sum of its proper divisors (62506346828400).

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

19996939766160 is a wasteful number, since it uses less digits than its factorization.

19996939766160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856 (or 3847 counting only the distinct ones).

The product of its (nonzero) digits is 1607077584, while the sum is 81.

The spelling of 19996939766160 in words is "nineteen trillion, nine hundred ninety-six billion, nine hundred thirty-nine million, seven hundred sixty-six thousand, one hundred sixty".