19487984712 has 64 divisors (see below), whose sum is σ = 55796428800. Its totient is φ = 5556348480.

The previous prime is 19487984671. The next prime is 19487984713. The reversal of 19487984712 is 21748978491.

It is not an unprimeable number, because it can be changed into a prime (19487984713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40614 + ... + 201557.

It is an arithmetic number, because the mean of its divisors is an integer number (871819200).

Almost surely, 2^19487984712 is an apocalyptic number.

19487984712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19487984712 is an abundant number, since it is smaller than the sum of its proper divisors (36308444088).

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

19487984712 is a wasteful number, since it uses less digits than its factorization.

19487984712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242666 (or 242662 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 60.

The spelling of 19487984712 in words is "nineteen billion, four hundred eighty-seven million, nine hundred eighty-four thousand, seven hundred twelve".