256477007114149 has 2 divisors, whose sum is σ = 256477007114150. Its totient is φ = 256477007114148.

The previous prime is 256477007114129. The next prime is 256477007114171. The reversal of 256477007114149 is 941411700774652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163857459665124 + 92619547449025 = 12800682^2 + 9623905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256477007114149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256477007114093 and 256477007114102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256477007114129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128238503557074 + 128238503557075.

It is an arithmetic number, because the mean of its divisors is an integer number (128238503557075).

Almost surely, 2^{256477007114149} is an apocalyptic number.

It is an amenable number.

256477007114149 is a deficient number, since it is larger than the sum of its proper divisors (1).

256477007114149 is an equidigital number, since it uses as much as digits as its factorization.

256477007114149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11854080, while the sum is 58.

The spelling of 256477007114149 in words is "two hundred fifty-six trillion, four hundred seventy-seven billion, seven million, one hundred fourteen thousand, one hundred forty-nine".