45564485749 has 2 divisors, whose sum is σ = 45564485750. Its totient is φ = 45564485748.

The previous prime is 45564485723. The next prime is 45564485779. The reversal of 45564485749 is 94758446554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43981639524 + 1582846225 = 209718^2 + 39785^2 .

It is a cyclic number.

It is not a de Polignac number, because 45564485749 - 2³³ = 36974551157 is a prime.

It is a super-2 number, since 2×45564485749² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45564485779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22782242874 + 22782242875.

It is an arithmetic number, because the mean of its divisors is an integer number (22782242875).

Almost surely, 2^45564485749 is an apocalyptic number.

It is an amenable number.

45564485749 is a deficient number, since it is larger than the sum of its proper divisors (1).

45564485749 is an equidigital number, since it uses as much as digits as its factorization.

45564485749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768000, while the sum is 61.

The spelling of 45564485749 in words is "forty-five billion, five hundred sixty-four million, four hundred eighty-five thousand, seven hundred forty-nine".