45842195621 has 2 divisors, whose sum is σ = 45842195622. Its totient is φ = 45842195620.

The previous prime is 45842195591. The next prime is 45842195629. The reversal of 45842195621 is 12659124854.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38349388900 + 7492806721 = 195830^2 + 86561^2 .

It is a cyclic number.

It is not a de Polignac number, because 45842195621 - 2⁶ = 45842195557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45842195629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22921097810 + 22921097811.

It is an arithmetic number, because the mean of its divisors is an integer number (22921097811).

Almost surely, 2^45842195621 is an apocalyptic number.

It is an amenable number.

45842195621 is a deficient number, since it is larger than the sum of its proper divisors (1).

45842195621 is an equidigital number, since it uses as much as digits as its factorization.

45842195621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 691200, while the sum is 47.

The spelling of 45842195621 in words is "forty-five billion, eight hundred forty-two million, one hundred ninety-five thousand, six hundred twenty-one".