256744301267154 has 8 divisors (see below), whose sum is σ = 513488602534320. Its totient is φ = 85581433755716.

The previous prime is 256744301267149. The next prime is 256744301267183. The reversal of 256744301267154 is 451762103447652.

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

256744301267154 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 256744301267094 and 256744301267103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21395358438924 + ... + 21395358438935.

It is an arithmetic number, because the mean of its divisors is an integer number (64186075316790).

Almost surely, 2^{256744301267154} is an apocalyptic number.

256744301267154 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.

256744301267154 is a wasteful number, since it uses less digits than its factorization.

256744301267154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42790716877864.

The product of its (nonzero) digits is 33868800, while the sum is 57.

The spelling of 256744301267154 in words is "two hundred fifty-six trillion, seven hundred forty-four billion, three hundred one million, two hundred sixty-seven thousand, one hundred fifty-four".