402564332257 has 8 divisors (see below), whose sum is σ = 404999049600. Its totient is φ = 400133733120.

The previous prime is 402564332243. The next prime is 402564332281. The reversal of 402564332257 is 752233465204.

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 402564332257 - 2⁷ = 402564332129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402564332207) 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, 833344 + ... + 1224577.

It is an arithmetic number, because the mean of its divisors is an integer number (50624881200).

Almost surely, 2^402564332257 is an apocalyptic number.

It is an amenable number.

402564332257 is a deficient number, since it is larger than the sum of its proper divisors (2434717343).

402564332257 is a wasteful number, since it uses less digits than its factorization.

402564332257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059103.

The product of its (nonzero) digits is 1209600, while the sum is 43.

The spelling of 402564332257 in words is "four hundred two billion, five hundred sixty-four million, three hundred thirty-two thousand, two hundred fifty-seven".