11555603659 has 2 divisors, whose sum is σ = 11555603660. Its totient is φ = 11555603658.

The previous prime is 11555603641. The next prime is 11555603671. The reversal of 11555603659 is 95630655511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11555603659 - 2²³ = 11547215051 is a prime.

It is not a weakly prime, because it can be changed into another prime (11555603359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5777801829 + 5777801830.

It is an arithmetic number, because the mean of its divisors is an integer number (5777801830).

Almost surely, 2^11555603659 is an apocalyptic number.

11555603659 is a deficient number, since it is larger than the sum of its proper divisors (1).

11555603659 is an equidigital number, since it uses as much as digits as its factorization.

11555603659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 607500, while the sum is 46.

The spelling of 11555603659 in words is "eleven billion, five hundred fifty-five million, six hundred three thousand, six hundred fifty-nine".