4256337475861 has 2 divisors, whose sum is σ = 4256337475862. Its totient is φ = 4256337475860.

The previous prime is 4256337475763. The next prime is 4256337475879. The reversal of 4256337475861 is 1685747336524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2605932204100 + 1650405271761 = 1614290^2 + 1284681^2 .

It is a cyclic number.

It is not a de Polignac number, because 4256337475861 - 2¹⁵ = 4256337443093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4256337475861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4256337175861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2128168737930 + 2128168737931.

It is an arithmetic number, because the mean of its divisors is an integer number (2128168737931).

Almost surely, 2^{4256337475861} is an apocalyptic number.

It is an amenable number.

4256337475861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4256337475861 is an equidigital number, since it uses as much as digits as its factorization.

4256337475861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 101606400, while the sum is 61.

The spelling of 4256337475861 in words is "four trillion, two hundred fifty-six billion, three hundred thirty-seven million, four hundred seventy-five thousand, eight hundred sixty-one".