718454250991 has 2 divisors, whose sum is σ = 718454250992. Its totient is φ = 718454250990.

The previous prime is 718454250967. The next prime is 718454251003. The reversal of 718454250991 is 199052454817.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 718454250991 - 2²⁹ = 717917380079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (718454250901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359227125495 + 359227125496.

It is an arithmetic number, because the mean of its divisors is an integer number (359227125496).

Almost surely, 2^718454250991 is an apocalyptic number.

718454250991 is a deficient number, since it is larger than the sum of its proper divisors (1).

718454250991 is an equidigital number, since it uses as much as digits as its factorization.

718454250991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 55.

The spelling of 718454250991 in words is "seven hundred eighteen billion, four hundred fifty-four million, two hundred fifty thousand, nine hundred ninety-one".