256148511726 has 8 divisors (see below), whose sum is σ = 512297023464. Its totient is φ = 85382837240.

The previous prime is 256148511709. The next prime is 256148511733. The reversal of 256148511726 is 627115841652.

It is a happy number.

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

256148511726 is an admirable number.

It is a super-2 number, since 2×256148511726² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21345709305 + ... + 21345709316.

It is an arithmetic number, because the mean of its divisors is an integer number (64037127933).

Almost surely, 2^256148511726 is an apocalyptic number.

256148511726 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

256148511726 is a wasteful number, since it uses less digits than its factorization.

256148511726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42691418626.

The product of its digits is 806400, while the sum is 48.

The spelling of 256148511726 in words is "two hundred fifty-six billion, one hundred forty-eight million, five hundred eleven thousand, seven hundred twenty-six".