255137513447 has 2 divisors, whose sum is σ = 255137513448. Its totient is φ = 255137513446.

The previous prime is 255137513437. The next prime is 255137513471. The reversal of 255137513447 is 744315731552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255137513447 - 2⁴ = 255137513431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255137513417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127568756723 + 127568756724.

It is an arithmetic number, because the mean of its divisors is an integer number (127568756724).

Almost surely, 2^255137513447 is an apocalyptic number.

255137513447 is a deficient number, since it is larger than the sum of its proper divisors (1).

255137513447 is an equidigital number, since it uses as much as digits as its factorization.

255137513447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764000, while the sum is 47.

The spelling of 255137513447 in words is "two hundred fifty-five billion, one hundred thirty-seven million, five hundred thirteen thousand, four hundred forty-seven".