19976428612 has 96 divisors (see below), whose sum is σ = 44372579328. Its totient is φ = 7672817664.

The previous prime is 19976428609. The next prime is 19976428631. The reversal of 19976428612 is 21682467991.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 815698 + ... + 839830.

It is an arithmetic number, because the mean of its divisors is an integer number (462214368).

Almost surely, 2^19976428612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19976428612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22186289664).

19976428612 is an abundant number, since it is smaller than the sum of its proper divisors (24396150716).

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

19976428612 is a wasteful number, since it uses less digits than its factorization.

19976428612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24245 (or 24243 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 55.

The spelling of 19976428612 in words is "nineteen billion, nine hundred seventy-six million, four hundred twenty-eight thousand, six hundred twelve".