20878987914 has 24 divisors (see below), whose sum is σ = 45240499200. Its totient is φ = 6959248488.

The previous prime is 20878987907. The next prime is 20878987933. The reversal of 20878987914 is 41978987802.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 500637 + ... + 540735.

It is an arithmetic number, because the mean of its divisors is an integer number (1885020800).

Almost surely, 2^20878987914 is an apocalyptic number.

20878987914 is an abundant number, since it is smaller than the sum of its proper divisors (24361511286).

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

20878987914 is a wasteful number, since it uses less digits than its factorization.

20878987914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69034 (or 69031 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 63.

The spelling of 20878987914 in words is "twenty billion, eight hundred seventy-eight million, nine hundred eighty-seven thousand, nine hundred fourteen".