76561000403257 has 4 divisors (see below), whose sum is σ = 77530126990720. Its totient is φ = 75591873815796.

The previous prime is 76561000403249. The next prime is 76561000403269. The reversal of 76561000403257 is 75230400016567.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 76561000403257 - 2³ = 76561000403249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76561000433257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484563293613 + ... + 484563293770.

It is an arithmetic number, because the mean of its divisors is an integer number (19382531747680).

Almost surely, 2^{76561000403257} is an apocalyptic number.

It is an amenable number.

76561000403257 is a deficient number, since it is larger than the sum of its proper divisors (969126587463).

76561000403257 is an equidigital number, since it uses as much as digits as its factorization.

76561000403257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969126587462.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 76561000403257 in words is "seventy-six trillion, five hundred sixty-one billion, four hundred three thousand, two hundred fifty-seven".