11667777890 has 16 divisors (see below), whose sum is σ = 21218517432. Its totient is φ = 4618996224.

The previous prime is 11667777833. The next prime is 11667777899. The reversal of 11667777890 is 9877776611.

11667777890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9214656049 + 2453121841 = 95993^2 + 49529^2 .

It is a super-2 number, since 2×11667777890² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11667777899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6013349 + ... + 6015288.

Almost surely, 2^11667777890 is an apocalyptic number.

11667777890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11667777890 is a deficient number, since it is larger than the sum of its proper divisors (9550739542).

11667777890 is a wasteful number, since it uses less digits than its factorization.

11667777890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12028741.

The product of its (nonzero) digits is 6223392, while the sum is 59.

The spelling of 11667777890 in words is "eleven billion, six hundred sixty-seven million, seven hundred seventy-seven thousand, eight hundred ninety".