256724222323574 has 4 divisors (see below), whose sum is σ = 385086333485364. Its totient is φ = 128362111161786.

The previous prime is 256724222323477. The next prime is 256724222323631. The reversal of 256724222323574 is 475323222427652.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×256724222323574² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64181055580892 + ... + 64181055580895.

It is an arithmetic number, because the mean of its divisors is an integer number (96271583371341).

Almost surely, 2^{256724222323574} is an apocalyptic number.

256724222323574 is a deficient number, since it is larger than the sum of its proper divisors (128362111161790).

256724222323574 is a wasteful number, since it uses less digits than its factorization.

256724222323574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128362111161789.

The product of its digits is 67737600, while the sum is 56.

The spelling of 256724222323574 in words is "two hundred fifty-six trillion, seven hundred twenty-four billion, two hundred twenty-two million, three hundred twenty-three thousand, five hundred seventy-four".