256344161154 has 8 divisors (see below), whose sum is σ = 512688322320. Its totient is φ = 85448053716.

The previous prime is 256344161147. The next prime is 256344161179. The reversal of 256344161154 is 451161443652.

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

256344161154 is an admirable number.

It is a super-2 number, since 2×256344161154² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21362013424 + ... + 21362013435.

It is an arithmetic number, because the mean of its divisors is an integer number (64086040290).

Almost surely, 2^256344161154 is an apocalyptic number.

256344161154 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.

256344161154 is a wasteful number, since it uses less digits than its factorization.

256344161154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42724026864.

The product of its digits is 345600, while the sum is 42.

The spelling of 256344161154 in words is "two hundred fifty-six billion, three hundred forty-four million, one hundred sixty-one thousand, one hundred fifty-four".