256913503750 has 20 divisors (see below), whose sum is σ = 481558673772. Its totient is φ = 102765401000.

The previous prime is 256913503729. The next prime is 256913503753. The reversal of 256913503750 is 57305319652.

It is a self number, because there is not a number n which added to its sum of digits gives 256913503750.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256913503753) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 102764152 + ... + 102766651.

Almost surely, 2^256913503750 is an apocalyptic number.

256913503750 is a deficient number, since it is larger than the sum of its proper divisors (224645170022).

256913503750 is an equidigital number, since it uses as much as digits as its factorization.

256913503750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205530825 (or 205530810 counting only the distinct ones).

The product of its (nonzero) digits is 850500, while the sum is 46.

The spelling of 256913503750 in words is "two hundred fifty-six billion, nine hundred thirteen million, five hundred three thousand, seven hundred fifty".