11137720766 has 32 divisors (see below), whose sum is σ = 17564456448. Its totient is φ = 5290810560.

The previous prime is 11137720747. The next prime is 11137720817. The reversal of 11137720766 is 66702773111.

It is a super-2 number, since 2×11137720766² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Curzon number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1218971 + ... + 1228073.

It is an arithmetic number, because the mean of its divisors is an integer number (548889264).

Almost surely, 2^11137720766 is an apocalyptic number.

11137720766 is a deficient number, since it is larger than the sum of its proper divisors (6426735682).

11137720766 is a wasteful number, since it uses less digits than its factorization.

11137720766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9536.

The product of its (nonzero) digits is 74088, while the sum is 41.

The spelling of 11137720766 in words is "eleven billion, one hundred thirty-seven million, seven hundred twenty thousand, seven hundred sixty-six".