11667305123 has 4 divisors (see below), whose sum is σ = 11667665400. Its totient is φ = 11666944848.

The previous prime is 11667305113. The next prime is 11667305147. The reversal of 11667305123 is 32150376611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11667305123 - 2²² = 11663110819 is a prime.

It is a super-2 number, since 2×11667305123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11667305113) 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, 126173 + ... + 198126.

It is an arithmetic number, because the mean of its divisors is an integer number (2916916350).

Almost surely, 2^11667305123 is an apocalyptic number.

11667305123 is a deficient number, since it is larger than the sum of its proper divisors (360277).

11667305123 is an equidigital number, since it uses as much as digits as its factorization.

11667305123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360276.

The product of its (nonzero) digits is 22680, while the sum is 35.

The spelling of 11667305123 in words is "eleven billion, six hundred sixty-seven million, three hundred five thousand, one hundred twenty-three".