11183780061 has 12 divisors (see below), whose sum is σ = 16856712288. Its totient is φ = 7131685704.

The previous prime is 11183780053. The next prime is 11183780117. The reversal of 11183780061 is 16008738111.

It is a happy number.

It is not a de Polignac number, because 11183780061 - 2³ = 11183780053 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11183779998 and 11183780025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11183780051) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 27013755 + ... + 27014168.

It is an arithmetic number, because the mean of its divisors is an integer number (1404726024).

Almost surely, 2^11183780061 is an apocalyptic number.

It is an amenable number.

11183780061 is a deficient number, since it is larger than the sum of its proper divisors (5672932227).

11183780061 is a wasteful number, since it uses less digits than its factorization.

11183780061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54027952 (or 54027949 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The spelling of 11183780061 in words is "eleven billion, one hundred eighty-three million, seven hundred eighty thousand, sixty-one".