19801613120 has 56 divisors (see below), whose sum is σ = 47179528704. Its totient is φ = 7916120576.

The previous prime is 19801613119. The next prime is 19801613129. The reversal of 19801613120 is 2131610891.

It is a super-2 number, since 2×19801613120² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19801613129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 574289 + ... + 607791.

It is an arithmetic number, because the mean of its divisors is an integer number (842491584).

Almost surely, 2^19801613120 is an apocalyptic number.

19801613120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19801613120 is an abundant number, since it is smaller than the sum of its proper divisors (27377915584).

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

19801613120 is a wasteful number, since it uses less digits than its factorization.

19801613120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35367 (or 35357 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 19801613120 in words is "nineteen billion, eight hundred one million, six hundred thirteen thousand, one hundred twenty".