45444539971 has 2 divisors, whose sum is σ = 45444539972. Its totient is φ = 45444539970.

The previous prime is 45444539969. The next prime is 45444539983. The reversal of 45444539971 is 17993544454.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45444539971 - 2¹ = 45444539969 is a prime.

Together with 45444539969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45444539471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22722269985 + 22722269986.

It is an arithmetic number, because the mean of its divisors is an integer number (22722269986).

Almost surely, 2^45444539971 is an apocalyptic number.

45444539971 is a deficient number, since it is larger than the sum of its proper divisors (1).

45444539971 is an equidigital number, since it uses as much as digits as its factorization.

45444539971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10886400, while the sum is 55.

The spelling of 45444539971 in words is "forty-five billion, four hundred forty-four million, five hundred thirty-nine thousand, nine hundred seventy-one".