11888998553 has 2 divisors, whose sum is σ = 11888998554. Its totient is φ = 11888998552.

The previous prime is 11888998519. The next prime is 11888998607. The reversal of 11888998553 is 35589988811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7869818944 + 4019179609 = 88712^2 + 63397^2 .

It is a cyclic number.

It is not a de Polignac number, because 11888998553 - 2¹² = 11888994457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11888998553.

It is not a weakly prime, because it can be changed into another prime (11888998753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5944499276 + 5944499277.

It is an arithmetic number, because the mean of its divisors is an integer number (5944499277).

Almost surely, 2^11888998553 is an apocalyptic number.

It is an amenable number.

11888998553 is a deficient number, since it is larger than the sum of its proper divisors (1).

11888998553 is an equidigital number, since it uses as much as digits as its factorization.

11888998553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24883200, while the sum is 65.

The spelling of 11888998553 in words is "eleven billion, eight hundred eighty-eight million, nine hundred ninety-eight thousand, five hundred fifty-three".