256116907 has 2 divisors, whose sum is σ = 256116908. Its totient is φ = 256116906.

The previous prime is 256116871. The next prime is 256116919. The reversal of 256116907 is 709611652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256116907 - 2¹⁹ = 255592619 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (256116977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128058453 + 128058454.

It is an arithmetic number, because the mean of its divisors is an integer number (128058454).

Almost surely, 2^256116907 is an apocalyptic number.

256116907 is a deficient number, since it is larger than the sum of its proper divisors (1).

256116907 is an equidigital number, since it uses as much as digits as its factorization.

256116907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 256116907 is about 16003.6529267539. The cubic root of 256116907 is about 635.0570614397.

The spelling of 256116907 in words is "two hundred fifty-six million, one hundred sixteen thousand, nine hundred seven".