45169850909 has 2 divisors, whose sum is σ = 45169850910. Its totient is φ = 45169850908.

The previous prime is 45169850863. The next prime is 45169850933. The reversal of 45169850909 is 90905896154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44995742884 + 174108025 = 212122^2 + 13195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45169850909 is a prime.

It is a super-2 number, since 2×45169850909² (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 (45169850989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22584925454 + 22584925455.

It is an arithmetic number, because the mean of its divisors is an integer number (22584925455).

Almost surely, 2^45169850909 is an apocalyptic number.

It is an amenable number.

45169850909 is a deficient number, since it is larger than the sum of its proper divisors (1).

45169850909 is an equidigital number, since it uses as much as digits as its factorization.

45169850909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3499200, while the sum is 56.

The spelling of 45169850909 in words is "forty-five billion, one hundred sixty-nine million, eight hundred fifty thousand, nine hundred nine".