291421245959 has 2 divisors, whose sum is σ = 291421245960. Its totient is φ = 291421245958.

The previous prime is 291421245851. The next prime is 291421245989. The reversal of 291421245959 is 959542124192.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 291421245959 - 2¹² = 291421241863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 291421245959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (291421245989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145710622979 + 145710622980.

It is an arithmetic number, because the mean of its divisors is an integer number (145710622980).

Almost surely, 2^291421245959 is an apocalyptic number.

291421245959 is a deficient number, since it is larger than the sum of its proper divisors (1).

291421245959 is an equidigital number, since it uses as much as digits as its factorization.

291421245959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2332800, while the sum is 53.

The spelling of 291421245959 in words is "two hundred ninety-one billion, four hundred twenty-one million, two hundred forty-five thousand, nine hundred fifty-nine".