19612644480 has 512 divisors, whose sum is σ = 81615340800. Its totient is φ = 4388290560.

The previous prime is 19612644449. The next prime is 19612644509. The reversal of 19612644480 is 8444621691.

19612644480 is a `hidden beast` number, since 1 + 9 + 6 + 126 + 44 + 480 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2467072 + ... + 2475008.

Almost surely, 2^19612644480 is an apocalyptic number.

19612644480 is a gapful number since it is divisible by the number (10) 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 19612644480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40807670400).

19612644480 is an abundant number, since it is smaller than the sum of its proper divisors (62002696320).

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

19612644480 is a wasteful number, since it uses less digits than its factorization.

19612644480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7989 (or 7971 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 19612644480 in words is "nineteen billion, six hundred twelve million, six hundred forty-four thousand, four hundred eighty".