256510015151 has 8 divisors (see below), whose sum is σ = 276333708000. Its totient is φ = 236699487072.

The previous prime is 256510015129. The next prime is 256510015199. The reversal of 256510015151 is 151510015652.

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

It is a cyclic number.

It is not a de Polignac number, because 256510015151 - 2⁶ = 256510015087 is a prime.

It is a super-4 number, since 4×256510015151⁴ (a number of 47 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256510015121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3250700 + ... + 3328673.

It is an arithmetic number, because the mean of its divisors is an integer number (34541713500).

Almost surely, 2^256510015151 is an apocalyptic number.

256510015151 is a deficient number, since it is larger than the sum of its proper divisors (19823692849).

256510015151 is a wasteful number, since it uses less digits than its factorization.

256510015151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6582385.

The product of its (nonzero) digits is 7500, while the sum is 32.

The spelling of 256510015151 in words is "two hundred fifty-six billion, five hundred ten million, fifteen thousand, one hundred fifty-one".