11911934168690 has 8 divisors (see below), whose sum is σ = 21441481503660. Its totient is φ = 4764773667472.

The previous prime is 11911934168597. The next prime is 11911934168707. The reversal of 11911934168690 is 9686143911911.

It is a happy number.

It is a Cunningham number, because it is equal to 3451367²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 11911934168689 + 1 = 3451367^2 + 1^2 .

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

It is a super-2 number, since 2×11911934168690² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595596708425 + ... + 595596708444.

Almost surely, 2^{11911934168690} is an apocalyptic number.

11911934168690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11911934168690 is a deficient number, since it is larger than the sum of its proper divisors (9529547334970).

11911934168690 is a wasteful number, since it uses less digits than its factorization.

11911934168690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191193416876.

The product of its (nonzero) digits is 2519424, while the sum is 59.

The spelling of 11911934168690 in words is "eleven trillion, nine hundred eleven billion, nine hundred thirty-four million, one hundred sixty-eight thousand, six hundred ninety".