256431364156341 has 24 divisors (see below), whose sum is σ = 405156972201696. Its totient is φ = 154996291254240.

The previous prime is 256431364156267. The next prime is 256431364156381. The reversal of 256431364156341 is 143651463134652.

256431364156341 is a `hidden beast` number, since 2 + 5 + 6 + 4 + 3 + 1 + 36 + 4 + 1 + 563 + 41 = 666.

It is not a de Polignac number, because 256431364156341 - 2⁷ = 256431364156213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256431364156381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3472102215 + ... + 3472176068.

It is an arithmetic number, because the mean of its divisors is an integer number (16881540508404).

Almost surely, 2^{256431364156341} is an apocalyptic number.

It is an amenable number.

256431364156341 is a deficient number, since it is larger than the sum of its proper divisors (148725608045355).

256431364156341 is a wasteful number, since it uses less digits than its factorization.

256431364156341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6944278673 (or 6944278670 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 54.

The spelling of 256431364156341 in words is "two hundred fifty-six trillion, four hundred thirty-one billion, three hundred sixty-four million, one hundred fifty-six thousand, three hundred forty-one".