11982908813 has 8 divisors (see below), whose sum is σ = 12705108408. Its totient is φ = 11262633984.

The previous prime is 11982908783. The next prime is 11982908831. The reversal of 11982908813 is 31880928911.

It can be written as a sum of positive squares in 4 ways, for example, as 2934713929 + 9048194884 = 54173^2 + 95122^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11982908813 - 2⁸ = 11982908557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11982908213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468356 + ... + 493277.

It is an arithmetic number, because the mean of its divisors is an integer number (1588138551).

Almost surely, 2^11982908813 is an apocalyptic number.

It is an amenable number.

11982908813 is a deficient number, since it is larger than the sum of its proper divisors (722199595).

11982908813 is an equidigital number, since it uses as much as digits as its factorization.

11982908813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962383.

The product of its (nonzero) digits is 248832, while the sum is 50.

The spelling of 11982908813 in words is "eleven billion, nine hundred eighty-two million, nine hundred eight thousand, eight hundred thirteen".