11996620809 has 8 divisors (see below), whose sum is σ = 16936405920. Its totient is φ = 7527291456.

The previous prime is 11996620799. The next prime is 11996620837. The reversal of 11996620809 is 90802669911.

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

It is not a de Polignac number, because 11996620809 - 2⁷ = 11996620681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 235227859 = 11996620809 / (1 + 1 + 9 + 9 + 6 + 6 + 2 + 0 + 8 + 0 + 9).

It is not an unprimeable number, because it can be changed into a prime (11996620859) 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, 117613879 + ... + 117613980.

It is an arithmetic number, because the mean of its divisors is an integer number (2117050740).

Almost surely, 2^11996620809 is an apocalyptic number.

It is an amenable number.

11996620809 is a deficient number, since it is larger than the sum of its proper divisors (4939785111).

11996620809 is a wasteful number, since it uses less digits than its factorization.

11996620809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235227879.

The product of its (nonzero) digits is 419904, while the sum is 51.

The spelling of 11996620809 in words is "eleven billion, nine hundred ninety-six million, six hundred twenty thousand, eight hundred nine".