20928632468694 has 16 divisors (see below), whose sum is σ = 42361569335232. Its totient is φ = 6892160089928.

The previous prime is 20928632468687. The next prime is 20928632468743. The reversal of 20928632468694 is 49686423682902.

It is a congruent number.

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, 21012682704 + ... + 21012683699.

It is an arithmetic number, because the mean of its divisors is an integer number (2647598083452).

Almost surely, 2^{20928632468694} is an apocalyptic number.

20928632468694 is an abundant number, since it is smaller than the sum of its proper divisors (21432936866538).

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

20928632468694 is a wasteful number, since it uses less digits than its factorization.

20928632468694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42025366491.

The product of its (nonzero) digits is 429981696, while the sum is 69.

The spelling of 20928632468694 in words is "twenty trillion, nine hundred twenty-eight billion, six hundred thirty-two million, four hundred sixty-eight thousand, six hundred ninety-four".