20680881334 has 8 divisors (see below), whose sum is σ = 31023237168. Its totient is φ = 10339802280.

The previous prime is 20680881283. The next prime is 20680881359. The reversal of 20680881334 is 43318808602.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277617 + ... + 344140.

It is an arithmetic number, because the mean of its divisors is an integer number (3877904646).

Almost surely, 2^20680881334 is an apocalyptic number.

20680881334 is a deficient number, since it is larger than the sum of its proper divisors (10342355834).

20680881334 is a wasteful number, since it uses less digits than its factorization.

20680881334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638390.

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 20680881334 in words is "twenty billion, six hundred eighty million, eight hundred eighty-one thousand, three hundred thirty-four".