45573913081 has 2 divisors, whose sum is σ = 45573913082. Its totient is φ = 45573913080.

The previous prime is 45573913079. The next prime is 45573913129. The reversal of 45573913081 is 18031937554.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42372164025 + 3201749056 = 205845^2 + 56584^2 .

It is a cyclic number.

It is not a de Polignac number, because 45573913081 - 2¹ = 45573913079 is a prime.

It is a super-2 number, since 2×45573913081² (a number of 22 digits) contains 22 as substring.

Together with 45573913079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45573913001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22786956540 + 22786956541.

It is an arithmetic number, because the mean of its divisors is an integer number (22786956541).

Almost surely, 2^45573913081 is an apocalyptic number.

It is an amenable number.

45573913081 is a deficient number, since it is larger than the sum of its proper divisors (1).

45573913081 is an equidigital number, since it uses as much as digits as its factorization.

45573913081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 45573913081 in words is "forty-five billion, five hundred seventy-three million, nine hundred thirteen thousand, eighty-one".