19896680496 has 360 divisors, whose sum is σ = 66299423232. Its totient is φ = 5122656000.

The previous prime is 19896680437. The next prime is 19896680519. The reversal of 19896680496 is 69408669891.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 42973161 + ... + 42973623.

Almost surely, 2^19896680496 is an apocalyptic number.

19896680496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19896680496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33149711616).

19896680496 is an abundant number, since it is smaller than the sum of its proper divisors (46402742736).

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

19896680496 is a wasteful number, since it uses less digits than its factorization.

19896680496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 66.

The spelling of 19896680496 in words is "nineteen billion, eight hundred ninety-six million, six hundred eighty thousand, four hundred ninety-six".