20945907814 has 16 divisors (see below), whose sum is σ = 33914220480. Its totient is φ = 9644906880.

The previous prime is 20945907809. The next prime is 20945907839. The reversal of 20945907814 is 41870954902.

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, 923379 + ... + 945790.

It is an arithmetic number, because the mean of its divisors is an integer number (2119638780).

Almost surely, 2^20945907814 is an apocalyptic number.

20945907814 is a deficient number, since it is larger than the sum of its proper divisors (12968312666).

20945907814 is a wasteful number, since it uses less digits than its factorization.

20945907814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869615.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 20945907814 in words is "twenty billion, nine hundred forty-five million, nine hundred seven thousand, eight hundred fourteen".