45861885389 has 2 divisors, whose sum is σ = 45861885390. Its totient is φ = 45861885388.

The previous prime is 45861885359. The next prime is 45861885401. The reversal of 45861885389 is 98358816854.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35774696164 + 10087189225 = 189142^2 + 100435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45861885389 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45861885359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22930942694 + 22930942695.

It is an arithmetic number, because the mean of its divisors is an integer number (22930942695).

Almost surely, 2^45861885389 is an apocalyptic number.

It is an amenable number.

45861885389 is a deficient number, since it is larger than the sum of its proper divisors (1).

45861885389 is an equidigital number, since it uses as much as digits as its factorization.

45861885389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 66355200, while the sum is 65.

The spelling of 45861885389 in words is "forty-five billion, eight hundred sixty-one million, eight hundred eighty-five thousand, three hundred eighty-nine".