256460824629 has 24 divisors (see below), whose sum is σ = 371438127320. Its totient is φ = 170514989568.

The previous prime is 256460824577. The next prime is 256460824649. The reversal of 256460824629 is 926428064652.

256460824629 is a `hidden beast` number, since 2 + 5 + 6 + 4 + 6 + 0 + 8 + 2 + 4 + 629 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 123009428529 + 133451396100 = 350727^2 + 365310^2 .

It is a de Polignac number, because none of the positive numbers 2^k-256460824629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256460824649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30610689 + ... + 30619065.

Almost surely, 2^256460824629 is an apocalyptic number.

It is an amenable number.

256460824629 is a deficient number, since it is larger than the sum of its proper divisors (114977302691).

256460824629 is a wasteful number, since it uses less digits than its factorization.

256460824629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17109 (or 17106 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 54.

The spelling of 256460824629 in words is "two hundred fifty-six billion, four hundred sixty million, eight hundred twenty-four thousand, six hundred twenty-nine".