11811310899 has 8 divisors (see below), whose sum is σ = 16256428032. Its totient is φ = 7620200520.

The previous prime is 11811310891. The next prime is 11811310913. The reversal of 11811310899 is 99801311811.

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

It is not a de Polignac number, because 11811310899 - 2³ = 11811310891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11811310899.

It is not an unprimeable number, because it can be changed into a prime (11811310891) 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, 63501579 + ... + 63501764.

It is an arithmetic number, because the mean of its divisors is an integer number (2032053504).

Almost surely, 2^11811310899 is an apocalyptic number.

11811310899 is a deficient number, since it is larger than the sum of its proper divisors (4445117133).

11811310899 is a wasteful number, since it uses less digits than its factorization.

11811310899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127003377.

The product of its (nonzero) digits is 15552, while the sum is 42.

The spelling of 11811310899 in words is "eleven billion, eight hundred eleven million, three hundred ten thousand, eight hundred ninety-nine".