19716256316 has 12 divisors (see below), whose sum is σ = 34580296800. Its totient is φ = 9836171520.

The previous prime is 19716256291. The next prime is 19716256349. The reversal of 19716256316 is 61365261791.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5487140 + ... + 5490731.

It is an arithmetic number, because the mean of its divisors is an integer number (2881691400).

Almost surely, 2^19716256316 is an apocalyptic number.

It is an amenable number.

19716256316 is a deficient number, since it is larger than the sum of its proper divisors (14864040484).

19716256316 is a wasteful number, since it uses less digits than its factorization.

19716256316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10978324 (or 10978322 counting only the distinct ones).

The product of its digits is 408240, while the sum is 47.

The spelling of 19716256316 in words is "nineteen billion, seven hundred sixteen million, two hundred fifty-six thousand, three hundred sixteen".