20408831535682 has 16 divisors (see below), whose sum is σ = 31280936493312. Its totient is φ = 9982079697760.

The previous prime is 20408831535647. The next prime is 20408831535707. The reversal of 20408831535682 is 28653513880402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56567494 + ... + 56927137.

It is an arithmetic number, because the mean of its divisors is an integer number (1955058530832).

Almost surely, 2^{20408831535682} is an apocalyptic number.

20408831535682 is a deficient number, since it is larger than the sum of its proper divisors (10872104957630).

20408831535682 is a wasteful number, since it uses less digits than its factorization.

20408831535682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113496593.

The product of its (nonzero) digits is 11059200, while the sum is 55.

The spelling of 20408831535682 in words is "twenty trillion, four hundred eight billion, eight hundred thirty-one million, five hundred thirty-five thousand, six hundred eighty-two".