256622337552043 has 4 divisors (see below), whose sum is σ = 256623512840320. Its totient is φ = 256621162263768.

The previous prime is 256622337552029. The next prime is 256622337552067. The reversal of 256622337552043 is 340255733226652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256622337552043 - 2⁴¹ = 254423314296491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256622337552073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587316555 + ... + 587753332.

It is an arithmetic number, because the mean of its divisors is an integer number (64155878210080).

Almost surely, 2^{256622337552043} is an apocalyptic number.

256622337552043 is a deficient number, since it is larger than the sum of its proper divisors (1175288277).

256622337552043 is a wasteful number, since it uses less digits than its factorization.

256622337552043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175288276.

The product of its (nonzero) digits is 54432000, while the sum is 55.

The spelling of 256622337552043 in words is "two hundred fifty-six trillion, six hundred twenty-two billion, three hundred thirty-seven million, five hundred fifty-two thousand, forty-three".