256612303437455 has 8 divisors (see below), whose sum is σ = 351925444714272. Its totient is φ = 175962722357088.

The previous prime is 256612303437443. The next prime is 256612303437527. The reversal of 256612303437455 is 554734303216652.

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 256612303437455 - 2¹⁸ = 256612303175311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256612303437455.

It is a congruent 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, 3665890049072 + ... + 3665890049141.

It is an arithmetic number, because the mean of its divisors is an integer number (43990680589284).

Almost surely, 2^{256612303437455} is an apocalyptic number.

256612303437455 is a deficient number, since it is larger than the sum of its proper divisors (95313141276817).

256612303437455 is an equidigital number, since it uses as much as digits as its factorization.

256612303437455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7331780098225.

The product of its (nonzero) digits is 54432000, while the sum is 56.

The spelling of 256612303437455 in words is "two hundred fifty-six trillion, six hundred twelve billion, three hundred three million, four hundred thirty-seven thousand, four hundred fifty-five".