11891853799 has 4 divisors (see below), whose sum is σ = 13590690064. Its totient is φ = 10193017536.

The previous prime is 11891853739. The next prime is 11891853823. The reversal of 11891853799 is 99735819811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11891853799 - 2¹⁷ = 11891722727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11891853739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849418122 + ... + 849418135.

It is an arithmetic number, because the mean of its divisors is an integer number (3397672516).

Almost surely, 2^11891853799 is an apocalyptic number.

11891853799 is a deficient number, since it is larger than the sum of its proper divisors (1698836265).

11891853799 is an equidigital number, since it uses as much as digits as its factorization.

11891853799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698836264.

The product of its digits is 4898880, while the sum is 61.

The spelling of 11891853799 in words is "eleven billion, eight hundred ninety-one million, eight hundred fifty-three thousand, seven hundred ninety-nine".