136123878228 has 24 divisors (see below), whose sum is σ = 342054873888. Its totient is φ = 41884270176.

The previous prime is 136123878227. The next prime is 136123878251. The reversal of 136123878228 is 822878321631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136123878221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436294326 + ... + 436294637.

It is an arithmetic number, because the mean of its divisors is an integer number (14252286412).

Almost surely, 2^136123878228 is an apocalyptic number.

It is an amenable number.

136123878228 is an abundant number, since it is smaller than the sum of its proper divisors (205930995660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136123878228 is a wasteful number, since it uses less digits than its factorization.

136123878228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872588983 (or 872588981 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The spelling of 136123878228 in words is "one hundred thirty-six billion, one hundred twenty-three million, eight hundred seventy-eight thousand, two hundred twenty-eight".