15624983623 has 2 divisors, whose sum is σ = 15624983624. Its totient is φ = 15624983622.

The previous prime is 15624983551. The next prime is 15624983639. The reversal of 15624983623 is 32638942651.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15624983623 is a prime.

It is a super-2 number, since 2×15624983623² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15624984623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7812491811 + 7812491812.

It is an arithmetic number, because the mean of its divisors is an integer number (7812491812).

Almost surely, 2^15624983623 is an apocalyptic number.

15624983623 is a deficient number, since it is larger than the sum of its proper divisors (1).

15624983623 is an equidigital number, since it uses as much as digits as its factorization.

15624983623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 49.

The spelling of 15624983623 in words is "fifteen billion, six hundred twenty-four million, nine hundred eighty-three thousand, six hundred twenty-three".