12356563623 has 32 divisors (see below), whose sum is σ = 17325957120. Its totient is φ = 7824003840.

The previous prime is 12356563613. The next prime is 12356563649. The reversal of 12356563623 is 32636565321.

It is not a de Polignac number, because 12356563623 - 2⁹ = 12356563111 is a prime.

It is a super-2 number, since 2×12356563623² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12356563613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2130858 + ... + 2136648.

It is an arithmetic number, because the mean of its divisors is an integer number (541436160).

Almost surely, 2^12356563623 is an apocalyptic number.

12356563623 is a deficient number, since it is larger than the sum of its proper divisors (4969393497).

12356563623 is a wasteful number, since it uses less digits than its factorization.

12356563623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6287.

The product of its digits is 583200, while the sum is 42.

The spelling of 12356563623 in words is "twelve billion, three hundred fifty-six million, five hundred sixty-three thousand, six hundred twenty-three".