20813362804 has 24 divisors (see below), whose sum is σ = 39232263168. Its totient is φ = 9604433760.

The previous prime is 20813362789. The next prime is 20813362849. The reversal of 20813362804 is 40826331802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281349 + ... + 347539.

It is an arithmetic number, because the mean of its divisors is an integer number (1634677632).

Almost surely, 2^20813362804 is an apocalyptic number.

It is an amenable number.

20813362804 is a deficient number, since it is larger than the sum of its proper divisors (18418900364).

20813362804 is a wasteful number, since it uses less digits than its factorization.

20813362804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72255 (or 72253 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 20813362804 in words is "twenty billion, eight hundred thirteen million, three hundred sixty-two thousand, eight hundred four".