11969966069 has 8 divisors (see below), whose sum is σ = 12050627160. Its totient is φ = 11889561600.

The previous prime is 11969966059. The next prime is 11969966093. The reversal of 11969966069 is 96066996911.

It can be written as a sum of positive squares in 4 ways, for example, as 1165403044 + 10804563025 = 34138^2 + 103945^2 .

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 11969966069 - 2¹⁶ = 11969900533 is a prime.

It is a super-2 number, since 2×11969966069² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11969966059) 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, 29909 + ... + 157589.

It is an arithmetic number, because the mean of its divisors is an integer number (1506328395).

Almost surely, 2^11969966069 is an apocalyptic number.

It is an amenable number.

11969966069 is a deficient number, since it is larger than the sum of its proper divisors (80661091).

11969966069 is a wasteful number, since it uses less digits than its factorization.

11969966069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128311.

The product of its (nonzero) digits is 8503056, while the sum is 62.

The spelling of 11969966069 in words is "eleven billion, nine hundred sixty-nine million, nine hundred sixty-six thousand, sixty-nine".