19689682080 has 48 divisors (see below), whose sum is σ = 62022500064. Its totient is φ = 5250581760.

The previous prime is 19689682063. The next prime is 19689682141. The reversal of 19689682080 is 8028698691.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×19689682080² (a number of 21 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 19689682080.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20509606 + ... + 20510565.

It is an arithmetic number, because the mean of its divisors is an integer number (1292135418).

Almost surely, 2^19689682080 is an apocalyptic number.

19689682080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19689682080 is an abundant number, since it is smaller than the sum of its proper divisors (42332817984).

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

19689682080 is a wasteful number, since it uses less digits than its factorization.

19689682080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41020189 (or 41020181 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 57.

The spelling of 19689682080 in words is "nineteen billion, six hundred eighty-nine million, six hundred eighty-two thousand, eighty".