45444539969 has 2 divisors, whose sum is σ = 45444539970. Its totient is φ = 45444539968.

The previous prime is 45444539963. The next prime is 45444539971. The reversal of 45444539969 is 96993544454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43801048369 + 1643491600 = 209287^2 + 40540^2 .

It is a cyclic number.

It is not a de Polignac number, because 45444539969 - 2⁸ = 45444539713 is a prime.

It is a super-2 number, since 2×45444539969² (a number of 22 digits) contains 22 as substring.

Together with 45444539971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45444539963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22722269984 + 22722269985.

It is an arithmetic number, because the mean of its divisors is an integer number (22722269985).

Almost surely, 2^45444539969 is an apocalyptic number.

It is an amenable number.

45444539969 is a deficient number, since it is larger than the sum of its proper divisors (1).

45444539969 is an equidigital number, since it uses as much as digits as its factorization.

45444539969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 83980800, while the sum is 62.

The spelling of 45444539969 in words is "forty-five billion, four hundred forty-four million, five hundred thirty-nine thousand, nine hundred sixty-nine".