45444663623 has 4 divisors (see below), whose sum is σ = 45555775680. Its totient is φ = 45333551568.

The previous prime is 45444663577. The next prime is 45444663631. The reversal of 45444663623 is 32636644454.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45444663623 is a prime.

It is a super-2 number, since 2×45444663623² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45444663023) 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 in 3 ways as a sum of consecutive naturals, for example, 55555415 + ... + 55556232.

It is an arithmetic number, because the mean of its divisors is an integer number (11388943920).

Almost surely, 2^45444663623 is an apocalyptic number.

45444663623 is a deficient number, since it is larger than the sum of its proper divisors (111112057).

45444663623 is a wasteful number, since it uses less digits than its factorization.

45444663623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111112056.

The product of its digits is 4976640, while the sum is 47.

The spelling of 45444663623 in words is "forty-five billion, four hundred forty-four million, six hundred sixty-three thousand, six hundred twenty-three".