255406402291 has 2 divisors, whose sum is σ = 255406402292. Its totient is φ = 255406402290.

The previous prime is 255406402267. The next prime is 255406402373. The reversal of 255406402291 is 192204604552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255406402291 - 2¹³ = 255406394099 is a prime.

It is not a weakly prime, because it can be changed into another prime (255406406291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127703201145 + 127703201146.

It is an arithmetic number, because the mean of its divisors is an integer number (127703201146).

Almost surely, 2^255406402291 is an apocalyptic number.

255406402291 is a deficient number, since it is larger than the sum of its proper divisors (1).

255406402291 is an equidigital number, since it uses as much as digits as its factorization.

255406402291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 255406402291 in words is "two hundred fifty-five billion, four hundred six million, four hundred two thousand, two hundred ninety-one".