11447556623 has 2 divisors, whose sum is σ = 11447556624. Its totient is φ = 11447556622.

The previous prime is 11447556557. The next prime is 11447556629. The reversal of 11447556623 is 32665574411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11447556623 - 2¹⁰ = 11447555599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11447556629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5723778311 + 5723778312.

It is an arithmetic number, because the mean of its divisors is an integer number (5723778312).

Almost surely, 2^11447556623 is an apocalyptic number.

11447556623 is a deficient number, since it is larger than the sum of its proper divisors (1).

11447556623 is an equidigital number, since it uses as much as digits as its factorization.

11447556623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 44.

The spelling of 11447556623 in words is "eleven billion, four hundred forty-seven million, five hundred fifty-six thousand, six hundred twenty-three".