80136123194 has 8 divisors (see below), whose sum is σ = 120702958068. Its totient is φ = 39901803840.

The previous prime is 80136123169. The next prime is 80136123203. The reversal of 80136123194 is 49132163108.

It can be written as a sum of positive squares in 2 ways, for example, as 76583367169 + 3552756025 = 276737^2 + 59605^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83128277 + ... + 83129240.

Almost surely, 2^80136123194 is an apocalyptic number.

80136123194 is a deficient number, since it is larger than the sum of its proper divisors (40566834874).

80136123194 is a wasteful number, since it uses less digits than its factorization.

80136123194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166257760.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 80136123194 in words is "eighty billion, one hundred thirty-six million, one hundred twenty-three thousand, one hundred ninety-four".