20634939981922 has 32 divisors (see below), whose sum is σ = 35601017742720. Its totient is φ = 8786994289920.

The previous prime is 20634939981893. The next prime is 20634939981947. The reversal of 20634939981922 is 22918993943602.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4980183 + ... + 8128474.

It is an arithmetic number, because the mean of its divisors is an integer number (1112531804460).

Almost surely, 2^{20634939981922} is an apocalyptic number.

20634939981922 is a deficient number, since it is larger than the sum of its proper divisors (14966077760798).

20634939981922 is a wasteful number, since it uses less digits than its factorization.

20634939981922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13109386.

The product of its (nonzero) digits is 90699264, while the sum is 67.

The spelling of 20634939981922 in words is "twenty trillion, six hundred thirty-four billion, nine hundred thirty-nine million, nine hundred eighty-one thousand, nine hundred twenty-two".