16640763772 has 12 divisors (see below), whose sum is σ = 29350639360. Its totient is φ = 8254866816.

The previous prime is 16640763743. The next prime is 16640763779. The reversal of 16640763772 is 27736704661.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16640763779) 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, 16378197 + ... + 16379212.

Almost surely, 2^16640763772 is an apocalyptic number.

It is an amenable number.

16640763772 is a deficient number, since it is larger than the sum of its proper divisors (12709875588).

16640763772 is a wasteful number, since it uses less digits than its factorization.

16640763772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32757540 (or 32757538 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 49.

The spelling of 16640763772 in words is "sixteen billion, six hundred forty million, seven hundred sixty-three thousand, seven hundred seventy-two".