19656752648 has 32 divisors (see below), whose sum is σ = 39866420160. Its totient is φ = 9032370240.

The previous prime is 19656752627. The next prime is 19656752659. The reversal of 19656752648 is 84625765691.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392708 + ... + 439923.

It is an arithmetic number, because the mean of its divisors is an integer number (1245825630).

Almost surely, 2^19656752648 is an apocalyptic number.

It is an amenable number.

19656752648 is an abundant number, since it is smaller than the sum of its proper divisors (20209667512).

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

19656752648 is a wasteful number, since it uses less digits than its factorization.

19656752648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832877 (or 832873 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 59.

The spelling of 19656752648 in words is "nineteen billion, six hundred fifty-six million, seven hundred fifty-two thousand, six hundred forty-eight".