111691473466 has 4 divisors (see below), whose sum is σ = 167537210202. Its totient is φ = 55845736732.

The previous prime is 111691473409. The next prime is 111691473527. The reversal of 111691473466 is 664374196111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 664374196111 = 31 ⋅21431425681.

It can be written as a sum of positive squares in only one way, i.e., 111575372841 + 116100625 = 334029^2 + 10775^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27922868365 + ... + 27922868368.

Almost surely, 2^111691473466 is an apocalyptic number.

111691473466 is a deficient number, since it is larger than the sum of its proper divisors (55845736736).

111691473466 is an equidigital number, since it uses as much as digits as its factorization.

111691473466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55845736735.

The product of its digits is 653184, while the sum is 49.

The spelling of 111691473466 in words is "one hundred eleven billion, six hundred ninety-one million, four hundred seventy-three thousand, four hundred sixty-six".