921377547782976 has 56 divisors (see below), whose sum is σ = 2516450506864384. Its totient is φ = 297218563799040.

The previous prime is 921377547782959. The next prime is 921377547783013. The reversal of 921377547782976 is 679287745773129.

It is a happy number.

921377547782976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 77400661705 + ... + 77400673608.

Almost surely, 2^{921377547782976} is an apocalyptic number.

921377547782976 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

921377547782976 is an abundant number, since it is smaller than the sum of its proper divisors (1595072959081408).

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

921377547782976 is a wasteful number, since it uses less digits than its factorization.

921377547782976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154801335359 (or 154801335349 counting only the distinct ones).

The product of its digits is 15682947840, while the sum is 84.

The spelling of 921377547782976 in words is "nine hundred twenty-one trillion, three hundred seventy-seven billion, five hundred forty-seven million, seven hundred eighty-two thousand, nine hundred seventy-six".