15623665045 has 16 divisors (see below), whose sum is σ = 19357060608. Its totient is φ = 12093318720.

The previous prime is 15623665039. The next prime is 15623665061. The reversal of 15623665045 is 54056632651.

It is not a de Polignac number, because 15623665045 - 2¹⁷ = 15623533973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15623664992 and 15623665010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1399827 + ... + 1410943.

It is an arithmetic number, because the mean of its divisors is an integer number (1209816288).

Almost surely, 2^15623665045 is an apocalyptic number.

It is an amenable number.

15623665045 is a deficient number, since it is larger than the sum of its proper divisors (3733395563).

15623665045 is a wasteful number, since it uses less digits than its factorization.

15623665045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20220.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 15623665045 in words is "fifteen billion, six hundred twenty-three million, six hundred sixty-five thousand, forty-five".