10911431778066 has 12 divisors (see below), whose sum is σ = 23641435519182. Its totient is φ = 3637143926016.

The previous prime is 10911431778041. The next prime is 10911431778077. The reversal of 10911431778066 is 66087713411901.

10911431778066 is a `hidden beast` number, since 1 + 0 + 9 + 1 + 1 + 431 + 77 + 80 + 66 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8016571136025 + 2894860642041 = 2831355^2 + 1701429^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 303095327151 + ... + 303095327186.

Almost surely, 2^{10911431778066} is an apocalyptic number.

10911431778066 is an abundant number, since it is smaller than the sum of its proper divisors (12730003741116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10911431778066 is a wasteful number, since it uses less digits than its factorization.

10911431778066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606190654345 (or 606190654342 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 10911431778066 in words is "ten trillion, nine hundred eleven billion, four hundred thirty-one million, seven hundred seventy-eight thousand, sixty-six".