20939605310694 has 32 divisors (see below), whose sum is σ = 47968551820800. Its totient is φ = 5969419771392.

The previous prime is 20939605310683. The next prime is 20939605310713. The reversal of 20939605310694 is 49601350693902.

It is a happy number.

It is a Curzon number.

It is a congruent 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, 555172714 + ... + 555210429.

It is an arithmetic number, because the mean of its divisors is an integer number (1499017244400).

Almost surely, 2^{20939605310694} is an apocalyptic number.

20939605310694 is an abundant number, since it is smaller than the sum of its proper divisors (27028946510106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20939605310694 is a wasteful number, since it uses less digits than its factorization.

20939605310694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110383604.

The product of its (nonzero) digits is 9447840, while the sum is 57.

The spelling of 20939605310694 in words is "twenty trillion, nine hundred thirty-nine billion, six hundred five million, three hundred ten thousand, six hundred ninety-four".