10256317640 has 16 divisors (see below), whose sum is σ = 23076714780. Its totient is φ = 4102527040.

The previous prime is 10256317637. The next prime is 10256317663. The reversal of 10256317640 is 4671365201.

10256317640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9939691204 + 316626436 = 99698^2 + 17794^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10256317640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128203931 + ... + 128204010.

Almost surely, 2^10256317640 is an apocalyptic number.

10256317640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10256317640 is an abundant number, since it is smaller than the sum of its proper divisors (12820397140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10256317640 is a wasteful number, since it uses less digits than its factorization.

10256317640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256407952 (or 256407948 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 10256317640 in words is "ten billion, two hundred fifty-six million, three hundred seventeen thousand, six hundred forty".