45121995973 has 2 divisors, whose sum is σ = 45121995974. Its totient is φ = 45121995972.

The previous prime is 45121995923. The next prime is 45121995983. The reversal of 45121995973 is 37959912154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41902908804 + 3219087169 = 204702^2 + 56737^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45121995973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45121995923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22560997986 + 22560997987.

It is an arithmetic number, because the mean of its divisors is an integer number (22560997987).

Almost surely, 2^45121995973 is an apocalyptic number.

It is an amenable number.

45121995973 is a deficient number, since it is larger than the sum of its proper divisors (1).

45121995973 is an equidigital number, since it uses as much as digits as its factorization.

45121995973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3061800, while the sum is 55.

The spelling of 45121995973 in words is "forty-five billion, one hundred twenty-one million, nine hundred ninety-five thousand, nine hundred seventy-three".