136123112858 has 4 divisors (see below), whose sum is σ = 204184669290. Its totient is φ = 68061556428.

The previous prime is 136123112833. The next prime is 136123112891. The reversal of 136123112858 is 858211321631.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 131495440129 + 4627672729 = 362623^2 + 68027^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34030778213 + ... + 34030778216.

Almost surely, 2^136123112858 is an apocalyptic number.

136123112858 is a deficient number, since it is larger than the sum of its proper divisors (68061556432).

136123112858 is an equidigital number, since it uses as much as digits as its factorization.

136123112858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68061556431.

The product of its digits is 69120, while the sum is 41.

The spelling of 136123112858 in words is "one hundred thirty-six billion, one hundred twenty-three million, one hundred twelve thousand, eight hundred fifty-eight".