256012476155 has 8 divisors (see below), whose sum is σ = 308568342672. Its totient is φ = 203907733408.

The previous prime is 256012476143. The next prime is 256012476173. The reversal of 256012476155 is 551674210652.

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 256012476155 - 2¹² = 256012472059 is a prime.

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, 112779692 + ... + 112781961.

It is an arithmetic number, because the mean of its divisors is an integer number (38571042834).

Almost surely, 2^256012476155 is an apocalyptic number.

256012476155 is a deficient number, since it is larger than the sum of its proper divisors (52555866517).

256012476155 is a wasteful number, since it uses less digits than its factorization.

256012476155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225561885.

The product of its (nonzero) digits is 504000, while the sum is 44.

The spelling of 256012476155 in words is "two hundred fifty-six billion, twelve million, four hundred seventy-six thousand, one hundred fifty-five".