256342012151 has 2 divisors, whose sum is σ = 256342012152. Its totient is φ = 256342012150.

The previous prime is 256342012123. The next prime is 256342012193. The reversal of 256342012151 is 151210243652.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256342012151 is a prime.

It is a super-2 number, since 2×256342012151² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256342014151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128171006075 + 128171006076.

It is an arithmetic number, because the mean of its divisors is an integer number (128171006076).

Almost surely, 2^256342012151 is an apocalyptic number.

256342012151 is a deficient number, since it is larger than the sum of its proper divisors (1).

256342012151 is an equidigital number, since it uses as much as digits as its factorization.

256342012151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 256342012151 in words is "two hundred fifty-six billion, three hundred forty-two million, twelve thousand, one hundred fifty-one".