19963998180072 has 48 divisors (see below), whose sum is σ = 54071899535940. Its totient is φ = 6654329100288.

The previous prime is 19963998180043. The next prime is 19963998180127. The reversal of 19963998180072 is 27008189936991.

19963998180072 is a `hidden beast` number, since 1 + 9 + 96 + 399 + 8 + 1 + 80 + 0 + 72 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19008675691236 + 955322488836 = 4359894^2 + 977406^2 .

It is a super-2 number, since 2×19963998180072² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

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 11 ways as a sum of consecutive naturals, for example, 5586163 + ... + 8434050.

Almost surely, 2^{19963998180072} is an apocalyptic number.

19963998180072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19963998180072 is an abundant number, since it is smaller than the sum of its proper divisors (34107901355868).

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

19963998180072 is a wasteful number, since it uses less digits than its factorization.

19963998180072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14040002 (or 14039995 counting only the distinct ones).

The product of its (nonzero) digits is 105815808, while the sum is 72.

The spelling of 19963998180072 in words is "nineteen trillion, nine hundred sixty-three billion, nine hundred ninety-eight million, one hundred eighty thousand, seventy-two".