256735122015342 has 16 divisors (see below), whose sum is σ = 518554107834192. Its totient is φ = 84731063371200.

The previous prime is 256735122015299. The next prime is 256735122015353. The reversal of 256735122015342 is 243510221537652.

It is a junction number, because it is equal to n+sod(n) for n = 256735122015291 and 256735122015300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211827657823 + ... + 211827659034.

It is an arithmetic number, because the mean of its divisors is an integer number (32409631739637).

Almost surely, 2^{256735122015342} is an apocalyptic number.

256735122015342 is an abundant number, since it is smaller than the sum of its proper divisors (261818985818850).

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

256735122015342 is a wasteful number, since it uses less digits than its factorization.

256735122015342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423655316963.

The product of its (nonzero) digits is 3024000, while the sum is 48.

The spelling of 256735122015342 in words is "two hundred fifty-six trillion, seven hundred thirty-five billion, one hundred twenty-two million, fifteen thousand, three hundred forty-two".