920921796457 has 8 divisors (see below), whose sum is σ = 991929347136. Its totient is φ = 849938161872.

The previous prime is 920921796433. The next prime is 920921796467. The reversal of 920921796457 is 754697129029.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 920921796457 - 2¹⁹ = 920921272169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 920921796395 and 920921796404.

It is not an unprimeable number, because it can be changed into a prime (920921796467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5899003 + ... + 6053104.

It is an arithmetic number, because the mean of its divisors is an integer number (123991168392).

Almost surely, 2^920921796457 is an apocalyptic number.

It is an amenable number.

920921796457 is a deficient number, since it is larger than the sum of its proper divisors (71007550679).

920921796457 is a wasteful number, since it uses less digits than its factorization.

920921796457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11958047.

The product of its (nonzero) digits is 17146080, while the sum is 61.

The spelling of 920921796457 in words is "nine hundred twenty billion, nine hundred twenty-one million, seven hundred ninety-six thousand, four hundred fifty-seven".