256753760453330 has 32 divisors (see below), whose sum is σ = 535618307531520. Its totient is φ = 86790003531840.

The previous prime is 256753760453303. The next prime is 256753760453419. The reversal of 256753760453330 is 33354067357652.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 256753760453330.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25830353225 + ... + 25830363164.

It is an arithmetic number, because the mean of its divisors is an integer number (16738072110360).

Almost surely, 2^{256753760453330} is an apocalyptic number.

256753760453330 is an abundant number, since it is smaller than the sum of its proper divisors (278864547078190).

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

256753760453330 is a wasteful number, since it uses less digits than its factorization.

256753760453330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51660716474.

The product of its (nonzero) digits is 142884000, while the sum is 59.

The spelling of 256753760453330 in words is "two hundred fifty-six trillion, seven hundred fifty-three billion, seven hundred sixty million, four hundred fifty-three thousand, three hundred thirty".