19479864112 has 40 divisors (see below), whose sum is σ = 37883289600. Its totient is φ = 9703594560.

The previous prime is 19479864097. The next prime is 19479864119. The reversal of 19479864112 is 21146897491.

It is a self number, because there is not a number n which added to its sum of digits gives 19479864112.

It is not an unprimeable number, because it can be changed into a prime (19479864119) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10410537 + ... + 10412407.

It is an arithmetic number, because the mean of its divisors is an integer number (947082240).

Almost surely, 2^19479864112 is an apocalyptic number.

It is an amenable number.

19479864112 is a deficient number, since it is larger than the sum of its proper divisors (18403425488).

19479864112 is a wasteful number, since it uses less digits than its factorization.

19479864112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3961 (or 3955 counting only the distinct ones).

The product of its digits is 870912, while the sum is 52.

The spelling of 19479864112 in words is "nineteen billion, four hundred seventy-nine million, eight hundred sixty-four thousand, one hundred twelve".