11811078399 has 8 divisors (see below), whose sum is σ = 16256108032. Its totient is φ = 7620050520.

The previous prime is 11811078397. The next prime is 11811078401. The reversal of 11811078399 is 99387011811.

It is an interprime number because it is at equal distance from previous prime (11811078397) and next prime (11811078401).

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

It is not a de Polignac number, because 11811078399 - 2¹ = 11811078397 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 (11811078397) 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, 63500329 + ... + 63500514.

It is an arithmetic number, because the mean of its divisors is an integer number (2032013504).

Almost surely, 2^11811078399 is an apocalyptic number.

11811078399 is a deficient number, since it is larger than the sum of its proper divisors (4445029633).

11811078399 is a wasteful number, since it uses less digits than its factorization.

11811078399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127000877.

The product of its (nonzero) digits is 108864, while the sum is 48.

The spelling of 11811078399 in words is "eleven billion, eight hundred eleven million, seventy-eight thousand, three hundred ninety-nine".