20916834236 has 12 divisors (see below), whose sum is σ = 36693960240. Its totient is φ = 10432845600.

The previous prime is 20916834227. The next prime is 20916834287. The reversal of 20916834236 is 63243861902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6391040 + ... + 6394311.

It is an arithmetic number, because the mean of its divisors is an integer number (3057830020).

Almost surely, 2^20916834236 is an apocalyptic number.

It is an amenable number.

20916834236 is a deficient number, since it is larger than the sum of its proper divisors (15777126004).

20916834236 is a wasteful number, since it uses less digits than its factorization.

20916834236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12785764 (or 12785762 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 20916834236 in words is "twenty billion, nine hundred sixteen million, eight hundred thirty-four thousand, two hundred thirty-six".