921004694980 has 24 divisors (see below), whose sum is σ = 1938838751640. Its totient is φ = 367501136640.

The previous prime is 921004694969. The next prime is 921004694999. The reversal of 921004694980 is 89496400129.

It can be written as a sum of positive squares in 4 ways, for example, as 312255204804 + 608749490176 = 558798^2 + 780224^2 .

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, 56287951 + ... + 56304310.

It is an arithmetic number, because the mean of its divisors is an integer number (80784947985).

Almost surely, 2^921004694980 is an apocalyptic number.

It is an amenable number.

921004694980 is an abundant number, since it is smaller than the sum of its proper divisors (1017834056660).

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

921004694980 is a wasteful number, since it uses less digits than its factorization.

921004694980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112592679 (or 112592677 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 921004694980 in words is "nine hundred twenty-one billion, four million, six hundred ninety-four thousand, nine hundred eighty".