11980797599 has 4 divisors (see below), whose sum is σ = 12043524480. Its totient is φ = 11918070720.

The previous prime is 11980797547. The next prime is 11980797623. The reversal of 11980797599 is 99579708911.

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 11980797599 - 2³² = 7685830303 is a prime.

It is a super-3 number, since 3×11980797599³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11980797539) 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, 31363154 + ... + 31363535.

It is an arithmetic number, because the mean of its divisors is an integer number (3010881120).

Almost surely, 2^11980797599 is an apocalyptic number.

11980797599 is a deficient number, since it is larger than the sum of its proper divisors (62726881).

11980797599 is an equidigital number, since it uses as much as digits as its factorization.

11980797599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62726880.

The product of its (nonzero) digits is 12859560, while the sum is 65.

The spelling of 11980797599 in words is "eleven billion, nine hundred eighty million, seven hundred ninety-seven thousand, five hundred ninety-nine".