921996767722 has 16 divisors (see below), whose sum is σ = 1418324064192. Its totient is φ = 449247434080.

The previous prime is 921996767693. The next prime is 921996767759. The reversal of 921996767722 is 227767699129.

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, 6265408 + ... + 6410875.

It is an arithmetic number, because the mean of its divisors is an integer number (88645254012).

Almost surely, 2^921996767722 is an apocalyptic number.

921996767722 is a deficient number, since it is larger than the sum of its proper divisors (496327296470).

921996767722 is a wasteful number, since it uses less digits than its factorization.

921996767722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12677213.

The product of its digits is 72013536, while the sum is 67.

The spelling of 921996767722 in words is "nine hundred twenty-one billion, nine hundred ninety-six million, seven hundred sixty-seven thousand, seven hundred twenty-two".