1138608648878 has 8 divisors (see below), whose sum is σ = 1708068994200. Its totient is φ = 569252317480.

The previous prime is 1138608648871. The next prime is 1138608648889. The reversal of 1138608648878 is 8788468068311.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138608648871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25976108 + ... + 26019903.

It is an arithmetic number, because the mean of its divisors is an integer number (213508624275).

Almost surely, 2^{1138608648878} is an apocalyptic number.

1138608648878 is a deficient number, since it is larger than the sum of its proper divisors (569460345322).

1138608648878 is a wasteful number, since it uses less digits than its factorization.

1138608648878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52006962.

The product of its (nonzero) digits is 99090432, while the sum is 68.

The spelling of 1138608648878 in words is "one trillion, one hundred thirty-eight billion, six hundred eight million, six hundred forty-eight thousand, eight hundred seventy-eight".