45297321991 has 2 divisors, whose sum is σ = 45297321992. Its totient is φ = 45297321990.

The previous prime is 45297321959. The next prime is 45297322061. The reversal of 45297321991 is 19912379254.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45297321991 - 2⁵ = 45297321959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45297321941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22648660995 + 22648660996.

It is an arithmetic number, because the mean of its divisors is an integer number (22648660996).

Almost surely, 2^45297321991 is an apocalyptic number.

45297321991 is a deficient number, since it is larger than the sum of its proper divisors (1).

45297321991 is an equidigital number, since it uses as much as digits as its factorization.

45297321991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 52.

The spelling of 45297321991 in words is "forty-five billion, two hundred ninety-seven million, three hundred twenty-one thousand, nine hundred ninety-one".