20810678134 has 8 divisors (see below), whose sum is σ = 31223338848. Its totient is φ = 10402898520.

The previous prime is 20810678117. The next prime is 20810678143. The reversal of 20810678134 is 43187601802.

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

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, 1209597 + ... + 1226680.

It is an arithmetic number, because the mean of its divisors is an integer number (3902917356).

Almost surely, 2^20810678134 is an apocalyptic number.

20810678134 is a deficient number, since it is larger than the sum of its proper divisors (10412660714).

20810678134 is a wasteful number, since it uses less digits than its factorization.

20810678134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440550.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 20810678134 in words is "twenty billion, eight hundred ten million, six hundred seventy-eight thousand, one hundred thirty-four".