19520873680 has 80 divisors (see below), whose sum is σ = 56585199744. Its totient is φ = 6084426240.

The previous prime is 19520873627. The next prime is 19520873681. The reversal of 19520873680 is 8637802591.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×19520873680³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19520873681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1578327 + ... + 1590646.

Almost surely, 2^19520873680 is an apocalyptic number.

19520873680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19520873680 is an abundant number, since it is smaller than the sum of its proper divisors (37064326064).

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

19520873680 is a wasteful number, since it uses less digits than its factorization.

19520873680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3169004 (or 3168998 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 19520873680 in words is "nineteen billion, five hundred twenty million, eight hundred seventy-three thousand, six hundred eighty".