45444539887 has 2 divisors, whose sum is σ = 45444539888. Its totient is φ = 45444539886.

The previous prime is 45444539873. The next prime is 45444539923. The reversal of 45444539887 is 78893544454.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45444539887 - 2¹⁹ = 45444015599 is a prime.

It is a super-2 number, since 2×45444539887² (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 (45444534887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22722269943 + 22722269944.

It is an arithmetic number, because the mean of its divisors is an integer number (22722269944).

Almost surely, 2^45444539887 is an apocalyptic number.

45444539887 is a deficient number, since it is larger than the sum of its proper divisors (1).

45444539887 is an equidigital number, since it uses as much as digits as its factorization.

45444539887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77414400, while the sum is 61.

The spelling of 45444539887 in words is "forty-five billion, four hundred forty-four million, five hundred thirty-nine thousand, eight hundred eighty-seven".