15623623243 has 2 divisors, whose sum is σ = 15623623244. Its totient is φ = 15623623242.

The previous prime is 15623623217. The next prime is 15623623277. The reversal of 15623623243 is 34232632651.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15623623243 - 2⁹ = 15623622731 is a prime.

It is not a weakly prime, because it can be changed into another prime (15623621243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7811811621 + 7811811622.

It is an arithmetic number, because the mean of its divisors is an integer number (7811811622).

Almost surely, 2^15623623243 is an apocalyptic number.

15623623243 is a deficient number, since it is larger than the sum of its proper divisors (1).

15623623243 is an equidigital number, since it uses as much as digits as its factorization.

15623623243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 37.

The spelling of 15623623243 in words is "fifteen billion, six hundred twenty-three million, six hundred twenty-three thousand, two hundred forty-three".