2136708678 has 16 divisors (see below), whose sum is σ = 4602141936. Its totient is φ = 657448800.

The previous prime is 2136708677. The next prime is 2136708703. The reversal of 2136708678 is 8768076312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136708677) 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 7 ways as a sum of consecutive naturals, for example, 13696773 + ... + 13696928.

It is an arithmetic number, because the mean of its divisors is an integer number (287633871).

Almost surely, 2^2136708678 is an apocalyptic number.

2136708678 is an abundant number, since it is smaller than the sum of its proper divisors (2465433258).

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

2136708678 is a wasteful number, since it uses less digits than its factorization.

2136708678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27393719.

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 2136708678 is about 46224.5462714346. The cubic root of 2136708678 is about 1287.9977507741.

The spelling of 2136708678 in words is "two billion, one hundred thirty-six million, seven hundred eight thousand, six hundred seventy-eight".