19764074776 has 16 divisors (see below), whose sum is σ = 37071340200. Its totient is φ = 9878384064.

The previous prime is 19764074773. The next prime is 19764074791. The reversal of 19764074776 is 67747046791.

It is a self number, because there is not a number n which added to its sum of digits gives 19764074776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19764074773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433606 + ... + 477013.

Almost surely, 2^19764074776 is an apocalyptic number.

It is an amenable number.

19764074776 is a deficient number, since it is larger than the sum of its proper divisors (17307265424).

19764074776 is a wasteful number, since it uses less digits than its factorization.

19764074776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913338 (or 913334 counting only the distinct ones).

The product of its (nonzero) digits is 12446784, while the sum is 58.

The spelling of 19764074776 in words is "nineteen billion, seven hundred sixty-four million, seventy-four thousand, seven hundred seventy-six".