20036923864 has 16 divisors (see below), whose sum is σ = 37991359800. Its totient is φ = 9905894592.

The previous prime is 20036923853. The next prime is 20036923927. The reversal of 20036923864 is 46832963002.

It is a self number, because there is not a number n which added to its sum of digits gives 20036923864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14070162 + ... + 14071585.

Almost surely, 2^20036923864 is an apocalyptic number.

It is an amenable number.

20036923864 is a deficient number, since it is larger than the sum of its proper divisors (17954435936).

20036923864 is a wasteful number, since it uses less digits than its factorization.

20036923864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28141842 (or 28141838 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 20036923864 in words is "twenty billion, thirty-six million, nine hundred twenty-three thousand, eight hundred sixty-four".