19712772384 has 96 divisors (see below), whose sum is σ = 55941842880. Its totient is φ = 6056819712.

The previous prime is 19712772379. The next prime is 19712772419. The reversal of 19712772384 is 48327721791.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78559 + ... + 213534.

It is an arithmetic number, because the mean of its divisors is an integer number (582727530).

Almost surely, 2^19712772384 is an apocalyptic number.

It is an amenable number.

19712772384 is an abundant number, since it is smaller than the sum of its proper divisors (36229070496).

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

19712772384 is a wasteful number, since it uses less digits than its factorization.

19712772384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292162 (or 292154 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 51.

The spelling of 19712772384 in words is "nineteen billion, seven hundred twelve million, seven hundred seventy-two thousand, three hundred eighty-four".