11962680909 has 4 divisors (see below), whose sum is σ = 15950241216. Its totient is φ = 7975120604.

The previous prime is 11962680881. The next prime is 11962680911. The reversal of 11962680909 is 90908626911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11962680909 - 2¹⁹ = 11962156621 is a prime.

It is a super-3 number, since 3×11962680909³ (a number of 31 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11962680209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1993780149 + ... + 1993780154.

It is an arithmetic number, because the mean of its divisors is an integer number (3987560304).

Almost surely, 2^11962680909 is an apocalyptic number.

It is an amenable number.

11962680909 is a deficient number, since it is larger than the sum of its proper divisors (3987560307).

11962680909 is an equidigital number, since it uses as much as digits as its factorization.

11962680909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3987560306.

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

The spelling of 11962680909 in words is "eleven billion, nine hundred sixty-two million, six hundred eighty thousand, nine hundred nine".