20434832868 has 24 divisors (see below), whose sum is σ = 48029319072. Its totient is φ = 6761890624.

The previous prime is 20434832857. The next prime is 20434832893. The reversal of 20434832868 is 86823843402.

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, 6213330 + ... + 6216617.

It is an arithmetic number, because the mean of its divisors is an integer number (2001221628).

Almost surely, 2^20434832868 is an apocalyptic number.

It is an amenable number.

20434832868 is an abundant number, since it is smaller than the sum of its proper divisors (27594486204).

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

20434832868 is a wasteful number, since it uses less digits than its factorization.

20434832868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12430091 (or 12430089 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 48.

The spelling of 20434832868 in words is "twenty billion, four hundred thirty-four million, eight hundred thirty-two thousand, eight hundred sixty-eight".