256503405141451 has 8 divisors (see below), whose sum is σ = 276272024439600. Its totient is φ = 236740155576672.

The previous prime is 256503405141443. The next prime is 256503405141461. The reversal of 256503405141451 is 154141504305652.

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 256503405141451 - 2³ = 256503405141443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256503405141461) 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, 1342334125 + ... + 1342525198.

It is an arithmetic number, because the mean of its divisors is an integer number (34534003054950).

Almost surely, 2^{256503405141451} is an apocalyptic number.

256503405141451 is a deficient number, since it is larger than the sum of its proper divisors (19768619298149).

256503405141451 is a wasteful number, since it uses less digits than its factorization.

256503405141451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684866685.

The product of its (nonzero) digits is 1440000, while the sum is 46.

The spelling of 256503405141451 in words is "two hundred fifty-six trillion, five hundred three billion, four hundred five million, one hundred forty-one thousand, four hundred fifty-one".