19986402708 has 72 divisors (see below), whose sum is σ = 54895742720. Its totient is φ = 6107892480.

The previous prime is 19986402701. The next prime is 19986402791. The reversal of 19986402708 is 80720468991.

19986402708 is a `hidden beast` number, since 1 + 99 + 86 + 402 + 70 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19986402701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 450085 + ... + 492492.

Almost surely, 2^19986402708 is an apocalyptic number.

19986402708 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19986402708 is an abundant number, since it is smaller than the sum of its proper divisors (34909340012).

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

19986402708 is a wasteful number, since it uses less digits than its factorization.

19986402708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942637 (or 942632 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 19986402708 in words is "nineteen billion, nine hundred eighty-six million, four hundred two thousand, seven hundred eight".