11597591623 has 2 divisors, whose sum is σ = 11597591624. Its totient is φ = 11597591622.

The previous prime is 11597591617. The next prime is 11597591639. The reversal of 11597591623 is 32619579511.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11597591623 - 2⁹ = 11597591111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11597591723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5798795811 + 5798795812.

It is an arithmetic number, because the mean of its divisors is an integer number (5798795812).

Almost surely, 2^11597591623 is an apocalyptic number.

11597591623 is a deficient number, since it is larger than the sum of its proper divisors (1).

11597591623 is an equidigital number, since it uses as much as digits as its factorization.

11597591623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 510300, while the sum is 49.

The spelling of 11597591623 in words is "eleven billion, five hundred ninety-seven million, five hundred ninety-one thousand, six hundred twenty-three".