921274982975 has 6 divisors (see below), whose sum is σ = 1142380978920. Its totient is φ = 737019986360.

The previous prime is 921274982963. The next prime is 921274982983. The reversal of 921274982975 is 579289472129.

It is not a de Polignac number, because 921274982975 - 2²⁴ = 921258205759 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18425499635 + ... + 18425499684.

It is an arithmetic number, because the mean of its divisors is an integer number (190396829820).

Almost surely, 2^921274982975 is an apocalyptic number.

921274982975 is a deficient number, since it is larger than the sum of its proper divisors (221105995945).

921274982975 is a wasteful number, since it uses less digits than its factorization.

921274982975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36850999329 (or 36850999324 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 65.

The spelling of 921274982975 in words is "nine hundred twenty-one billion, two hundred seventy-four million, nine hundred eighty-two thousand, nine hundred seventy-five".