256516733627454 has 8 divisors (see below), whose sum is σ = 513033467254920. Its totient is φ = 85505577875816.

The previous prime is 256516733627417. The next prime is 256516733627467. The reversal of 256516733627454 is 454726337615652.

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

256516733627454 is an admirable 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, 21376394468949 + ... + 21376394468960.

It is an arithmetic number, because the mean of its divisors is an integer number (64129183406865).

Almost surely, 2^{256516733627454} is an apocalyptic number.

256516733627454 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.

256516733627454 is a wasteful number, since it uses less digits than its factorization.

256516733627454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42752788937914.

The product of its digits is 762048000, while the sum is 66.

The spelling of 256516733627454 in words is "two hundred fifty-six trillion, five hundred sixteen billion, seven hundred thirty-three million, six hundred twenty-seven thousand, four hundred fifty-four".