256613629740359 has 2 divisors, whose sum is σ = 256613629740360. Its totient is φ = 256613629740358.

The previous prime is 256613629740341. The next prime is 256613629740371. The reversal of 256613629740359 is 953047926316652.

256613629740359 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256613629740359 - 2¹² = 256613629736263 is a prime.

It is a super-2 number, since 2×256613629740359² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256613629740319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128306814870179 + 128306814870180.

It is an arithmetic number, because the mean of its divisors is an integer number (128306814870180).

Almost surely, 2^{256613629740359} is an apocalyptic number.

256613629740359 is a deficient number, since it is larger than the sum of its proper divisors (1).

256613629740359 is an equidigital number, since it uses as much as digits as its factorization.

256613629740359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 440899200, while the sum is 68.

The spelling of 256613629740359 in words is "two hundred fifty-six trillion, six hundred thirteen billion, six hundred twenty-nine million, seven hundred forty thousand, three hundred fifty-nine".