20842306508 has 12 divisors (see below), whose sum is σ = 37650618432. Its totient is φ = 10084986960.

The previous prime is 20842306501. The next prime is 20842306553. The reversal of 20842306508 is 80560324802.

It is not an unprimeable number, because it can be changed into a prime (20842306501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84041435 + ... + 84041682.

It is an arithmetic number, because the mean of its divisors is an integer number (3137551536).

Almost surely, 2^20842306508 is an apocalyptic number.

It is an amenable number.

20842306508 is a deficient number, since it is larger than the sum of its proper divisors (16808311924).

20842306508 is a wasteful number, since it uses less digits than its factorization.

20842306508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168083152 (or 168083150 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 20842306508 in words is "twenty billion, eight hundred forty-two million, three hundred six thousand, five hundred eight".