256742751036570 has 32 divisors (see below), whose sum is σ = 617861574183168. Its totient is φ = 68278181199168.

The previous prime is 256742751036557. The next prime is 256742751036571. The reversal of 256742751036570 is 75630157247652.

It is not an unprimeable number, because it can be changed into a prime (256742751036571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11659514469 + ... + 11659536488.

It is an arithmetic number, because the mean of its divisors is an integer number (19308174193224).

Almost surely, 2^{256742751036570} is an apocalyptic number.

256742751036570 is an abundant number, since it is smaller than the sum of its proper divisors (361118823146598).

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

256742751036570 is a wasteful number, since it uses less digits than its factorization.

256742751036570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23319051334.

The product of its (nonzero) digits is 74088000, while the sum is 60.

The spelling of 256742751036570 in words is "two hundred fifty-six trillion, seven hundred forty-two billion, seven hundred fifty-one million, thirty-six thousand, five hundred seventy".