256724101770423 has 32 divisors (see below), whose sum is σ = 393290057705472. Its totient is φ = 145915451136000.

The previous prime is 256724101770329. The next prime is 256724101770473. The reversal of 256724101770423 is 324077101427652.

It is a happy number.

It is not a de Polignac number, because 256724101770423 - 2³³ = 256715511835831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256724101770473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19536258 + ... + 29918448.

It is an arithmetic number, because the mean of its divisors is an integer number (12290314303296).

Almost surely, 2^{256724101770423} is an apocalyptic number.

256724101770423 is a deficient number, since it is larger than the sum of its proper divisors (136565955935049).

256724101770423 is a wasteful number, since it uses less digits than its factorization.

256724101770423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10388495.

The product of its (nonzero) digits is 3951360, while the sum is 51.

The spelling of 256724101770423 in words is "two hundred fifty-six trillion, seven hundred twenty-four billion, one hundred one million, seven hundred seventy thousand, four hundred twenty-three".