11118782061 has 32 divisors (see below), whose sum is σ = 17588229120. Its totient is φ = 6925331952.

The previous prime is 11118782053. The next prime is 11118782063. The reversal of 11118782061 is 16028781111.

It is not a de Polignac number, because 11118782061 - 2³ = 11118782053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11118782063) 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 31 ways as a sum of consecutive naturals, for example, 181491 + ... + 234896.

It is an arithmetic number, because the mean of its divisors is an integer number (549632160).

Almost surely, 2^11118782061 is an apocalyptic number.

It is an amenable number.

11118782061 is a deficient number, since it is larger than the sum of its proper divisors (6469447059).

11118782061 is a wasteful number, since it uses less digits than its factorization.

11118782061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416462 (or 416456 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 36.

The spelling of 11118782061 in words is "eleven billion, one hundred eighteen million, seven hundred eighty-two thousand, sixty-one".