11137806728 has 16 divisors (see below), whose sum is σ = 21557045760. Its totient is φ = 5389261200.

The previous prime is 11137806727. The next prime is 11137806731. The reversal of 11137806728 is 82760873111.

It is not an unprimeable number, because it can be changed into a prime (11137806721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22455008 + ... + 22455503.

It is an arithmetic number, because the mean of its divisors is an integer number (1347315360).

Almost surely, 2^11137806728 is an apocalyptic number.

It is an amenable number.

11137806728 is a deficient number, since it is larger than the sum of its proper divisors (10419239032).

11137806728 is a wasteful number, since it uses less digits than its factorization.

11137806728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44910548 (or 44910544 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 44.

The spelling of 11137806728 in words is "eleven billion, one hundred thirty-seven million, eight hundred six thousand, seven hundred twenty-eight".