456942577921 has 2 divisors, whose sum is σ = 456942577922. Its totient is φ = 456942577920.

The previous prime is 456942577919. The next prime is 456942577933. The reversal of 456942577921 is 129775249654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 364550288400 + 92392289521 = 603780^2 + 303961^2 .

It is a cyclic number.

It is not a de Polignac number, because 456942577921 - 2¹ = 456942577919 is a prime.

Together with 456942577919, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 456942577921.

It is not a weakly prime, because it can be changed into another prime (456942577901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228471288960 + 228471288961.

It is an arithmetic number, because the mean of its divisors is an integer number (228471288961).

Almost surely, 2^456942577921 is an apocalyptic number.

It is an amenable number.

456942577921 is a deficient number, since it is larger than the sum of its proper divisors (1).

456942577921 is an equidigital number, since it uses as much as digits as its factorization.

456942577921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38102400, while the sum is 61.

The spelling of 456942577921 in words is "four hundred fifty-six billion, nine hundred forty-two million, five hundred seventy-seven thousand, nine hundred twenty-one".