11561882633 has 4 divisors (see below), whose sum is σ = 13213580160. Its totient is φ = 9910185108.

The previous prime is 11561882621. The next prime is 11561882639. The reversal of 11561882633 is 33628816511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11561882633 - 2⁸ = 11561882377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11561882639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 825848753 + ... + 825848766.

It is an arithmetic number, because the mean of its divisors is an integer number (3303395040).

Almost surely, 2^11561882633 is an apocalyptic number.

It is an amenable number.

11561882633 is a deficient number, since it is larger than the sum of its proper divisors (1651697527).

11561882633 is an equidigital number, since it uses as much as digits as its factorization.

11561882633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651697526.

The product of its digits is 207360, while the sum is 44.

The spelling of 11561882633 in words is "eleven billion, five hundred sixty-one million, eight hundred eighty-two thousand, six hundred thirty-three".