11666047475 has 6 divisors (see below), whose sum is σ = 14465898900. Its totient is φ = 9332837960.

The previous prime is 11666047451. The next prime is 11666047483. The reversal of 11666047475 is 57474066611.

It is not a de Polignac number, because 11666047475 - 2⁸ = 11666047219 is a prime.

It is a super-3 number, since 3×11666047475³ (a number of 31 digits) contains 333 as substring.

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, 233320925 + ... + 233320974.

It is an arithmetic number, because the mean of its divisors is an integer number (2410983150).

Almost surely, 2^11666047475 is an apocalyptic number.

11666047475 is a deficient number, since it is larger than the sum of its proper divisors (2799851425).

11666047475 is an equidigital number, since it uses as much as digits as its factorization.

11666047475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466641909 (or 466641904 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 11666047475 in words is "eleven billion, six hundred sixty-six million, forty-seven thousand, four hundred seventy-five".