256342266115 has 8 divisors (see below), whose sum is σ = 331273082448. Its totient is φ = 189298904160.

The previous prime is 256342266097. The next prime is 256342266133. The reversal of 256342266115 is 511662243652.

It is an interprime number because it is at equal distance from previous prime (256342266097) and next prime (256342266133).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 256342266115 - 2⁵ = 256342266083 is a prime.

It is a super-2 number, since 2×256342266115² (a number of 24 digits) contains 22 as substring.

It is a Duffinian 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, 1971863521 + ... + 1971863650.

It is an arithmetic number, because the mean of its divisors is an integer number (41409135306).

Almost surely, 2^256342266115 is an apocalyptic number.

256342266115 is a deficient number, since it is larger than the sum of its proper divisors (74930816333).

256342266115 is a wasteful number, since it uses less digits than its factorization.

256342266115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943727189.

The product of its digits is 518400, while the sum is 43.

The spelling of 256342266115 in words is "two hundred fifty-six billion, three hundred forty-two million, two hundred sixty-six thousand, one hundred fifteen".