19982777418072 has 64 divisors (see below), whose sum is σ = 63437388633600. Its totient is φ = 5709364976160.

The previous prime is 19982777418031. The next prime is 19982777418113. The reversal of 19982777418072 is 27081477728991.

It is an interprime number because it is at equal distance from previous prime (19982777418031) and next prime (19982777418113).

It is a super-2 number, since 2×19982777418072² (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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6608059804 + ... + 6608062827.

It is an arithmetic number, because the mean of its divisors is an integer number (991209197400).

Almost surely, 2^{19982777418072} is an apocalyptic number.

19982777418072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19982777418072 is an abundant number, since it is smaller than the sum of its proper divisors (43454611215528).

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

19982777418072 is a wasteful number, since it uses less digits than its factorization.

19982777418072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13216122653 (or 13216122643 counting only the distinct ones).

The product of its (nonzero) digits is 199148544, while the sum is 72.

The spelling of 19982777418072 in words is "nineteen trillion, nine hundred eighty-two billion, seven hundred seventy-seven million, four hundred eighteen thousand, seventy-two".