19688746976 has 24 divisors (see below), whose sum is σ = 39493586664. Its totient is φ = 9658629760.

The previous prime is 19688746951. The next prime is 19688746997. The reversal of 19688746976 is 67964788691.

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, 5802770 + ... + 5806161.

It is an arithmetic number, because the mean of its divisors is an integer number (1645566111).

Almost surely, 2^19688746976 is an apocalyptic number.

19688746976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19688746976 is an abundant number, since it is smaller than the sum of its proper divisors (19804839688).

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

19688746976 is a wasteful number, since it uses less digits than its factorization.

19688746976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11608994 (or 11608986 counting only the distinct ones).

The product of its digits is 219469824, while the sum is 71.

The spelling of 19688746976 in words is "nineteen billion, six hundred eighty-eight million, seven hundred forty-six thousand, nine hundred seventy-six".