744874345591 has 2 divisors, whose sum is σ = 744874345592. Its totient is φ = 744874345590.

The previous prime is 744874345493. The next prime is 744874345597. The reversal of 744874345591 is 195543478447.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 744874345591 - 2¹⁵ = 744874312823 is a prime.

It is a super-2 number, since 2×744874345591² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (744874345597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372437172795 + 372437172796.

It is an arithmetic number, because the mean of its divisors is an integer number (372437172796).

Almost surely, 2^744874345591 is an apocalyptic number.

744874345591 is a deficient number, since it is larger than the sum of its proper divisors (1).

744874345591 is an equidigital number, since it uses as much as digits as its factorization.

744874345591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67737600, while the sum is 61.

The spelling of 744874345591 in words is "seven hundred forty-four billion, eight hundred seventy-four million, three hundred forty-five thousand, five hundred ninety-one".