12209041775878 has 8 divisors (see below), whose sum is σ = 18534207997368. Its totient is φ = 6030972443424.

The previous prime is 12209041775867. The next prime is 12209041775891. The reversal of 12209041775878 is 87857714090221.

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

It is a congruent 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, 36774222051 + ... + 36774222382.

It is an arithmetic number, because the mean of its divisors is an integer number (2316775999671).

Almost surely, 2^{12209041775878} is an apocalyptic number.

12209041775878 is a deficient number, since it is larger than the sum of its proper divisors (6325166221490).

12209041775878 is an equidigital number, since it uses as much as digits as its factorization.

12209041775878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73548444518.

The product of its (nonzero) digits is 15805440, while the sum is 61.

The spelling of 12209041775878 in words is "twelve trillion, two hundred nine billion, forty-one million, seven hundred seventy-five thousand, eight hundred seventy-eight".