45167627581 has 2 divisors, whose sum is σ = 45167627582. Its totient is φ = 45167627580.

The previous prime is 45167627563. The next prime is 45167627587. The reversal of 45167627581 is 18572676154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27294344100 + 17873283481 = 165210^2 + 133691^2 .

It is a cyclic number.

It is not a de Polignac number, because 45167627581 - 2⁹ = 45167627069 is a prime.

It is a super-2 number, since 2×45167627581² (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 (45167627587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22583813790 + 22583813791.

It is an arithmetic number, because the mean of its divisors is an integer number (22583813791).

Almost surely, 2^45167627581 is an apocalyptic number.

It is an amenable number.

45167627581 is a deficient number, since it is larger than the sum of its proper divisors (1).

45167627581 is an equidigital number, since it uses as much as digits as its factorization.

45167627581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2822400, while the sum is 52.

The spelling of 45167627581 in words is "forty-five billion, one hundred sixty-seven million, six hundred twenty-seven thousand, five hundred eighty-one".