19716290664 has 32 divisors (see below), whose sum is σ = 56332259520. Its totient is φ = 5633225856.

The previous prime is 19716290647. The next prime is 19716290669. The reversal of 19716290664 is 46609261791.

It is not an unprimeable number, because it can be changed into a prime (19716290669) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 58679269 + ... + 58679604.

It is an arithmetic number, because the mean of its divisors is an integer number (1760383110).

Almost surely, 2^19716290664 is an apocalyptic number.

19716290664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19716290664 is an abundant number, since it is smaller than the sum of its proper divisors (36615968856).

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

19716290664 is a wasteful number, since it uses less digits than its factorization.

19716290664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117358889 (or 117358885 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 19716290664 in words is "nineteen billion, seven hundred sixteen million, two hundred ninety thousand, six hundred sixty-four".