12111768690 has 64 divisors (see below), whose sum is σ = 34969328640. Its totient is φ = 2622697920.

The previous prime is 12111768673. The next prime is 12111768701. The reversal of 12111768690 is 9686711121.

It is a super-2 number, since 2×12111768690² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1513776 + ... + 1521755.

It is an arithmetic number, because the mean of its divisors is an integer number (546395760).

Almost surely, 2^12111768690 is an apocalyptic number.

12111768690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12111768690 is an abundant number, since it is smaller than the sum of its proper divisors (22857559950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12111768690 is a wasteful number, since it uses less digits than its factorization.

12111768690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3035567.

The product of its (nonzero) digits is 36288, while the sum is 42.

The spelling of 12111768690 in words is "twelve billion, one hundred eleven million, seven hundred sixty-eight thousand, six hundred ninety".