20686615830134 has 8 divisors (see below), whose sum is σ = 31041244411488. Its totient is φ = 10339534359640.

The previous prime is 20686615830113. The next prime is 20686615830187. The reversal of 20686615830134 is 43103851668602.

It is a happy number.

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, 1886770862 + ... + 1886781825.

It is an arithmetic number, because the mean of its divisors is an integer number (3880155551436).

Almost surely, 2^{20686615830134} is an apocalyptic number.

20686615830134 is a deficient number, since it is larger than the sum of its proper divisors (10354628581354).

20686615830134 is a wasteful number, since it uses less digits than its factorization.

20686615830134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3773555430.

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 20686615830134 in words is "twenty trillion, six hundred eighty-six billion, six hundred fifteen million, eight hundred thirty thousand, one hundred thirty-four".