11933884561 has 4 divisors (see below), whose sum is σ = 11996365824. Its totient is φ = 11871403300.

The previous prime is 11933884541. The next prime is 11933884603. The reversal of 11933884561 is 16548833911.

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 11933884561 - 2³¹ = 9786400913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11933884541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31240345 + ... + 31240726.

It is an arithmetic number, because the mean of its divisors is an integer number (2999091456).

Almost surely, 2^11933884561 is an apocalyptic number.

It is an amenable number.

11933884561 is a deficient number, since it is larger than the sum of its proper divisors (62481263).

11933884561 is an equidigital number, since it uses as much as digits as its factorization.

11933884561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62481262.

The product of its digits is 622080, while the sum is 49.

The spelling of 11933884561 in words is "eleven billion, nine hundred thirty-three million, eight hundred eighty-four thousand, five hundred sixty-one".