136863138878 has 8 divisors (see below), whose sum is σ = 212373836280. Its totient is φ = 66071860120.

The previous prime is 136863138857. The next prime is 136863138889. The reversal of 136863138878 is 878831368631.

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

It is a self number, because there is not a number n which added to its sum of digits gives 136863138878.

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, 1179854588 + ... + 1179854703.

It is an arithmetic number, because the mean of its divisors is an integer number (26546729535).

Almost surely, 2^136863138878 is an apocalyptic number.

136863138878 is a deficient number, since it is larger than the sum of its proper divisors (75510697402).

136863138878 is a wasteful number, since it uses less digits than its factorization.

136863138878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359709322.

The product of its digits is 27869184, while the sum is 62.

The spelling of 136863138878 in words is "one hundred thirty-six billion, eight hundred sixty-three million, one hundred thirty-eight thousand, eight hundred seventy-eight".