76424807257 has 4 divisors (see below), whose sum is σ = 78202128400. Its totient is φ = 74647486116.

The previous prime is 76424807233. The next prime is 76424807281. The reversal of 76424807257 is 75270842467.

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 an interprime number because it is at equal distance from previous prime (76424807233) and next prime (76424807281).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76424807257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76424807227) 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, 888660507 + ... + 888660592.

It is an arithmetic number, because the mean of its divisors is an integer number (19550532100).

Almost surely, 2^76424807257 is an apocalyptic number.

It is an amenable number.

76424807257 is a deficient number, since it is larger than the sum of its proper divisors (1777321143).

76424807257 is a wasteful number, since it uses less digits than its factorization.

76424807257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777321142.

The product of its (nonzero) digits is 5268480, while the sum is 52.

The spelling of 76424807257 in words is "seventy-six billion, four hundred twenty-four million, eight hundred seven thousand, two hundred fifty-seven".