20858733696 has 32 divisors (see below), whose sum is σ = 55406012400. Its totient is φ = 6952911104.

The previous prime is 20858733677. The next prime is 20858733697. The reversal of 20858733696 is 69633785802.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (20858733697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27159426 + ... + 27160193.

Almost surely, 2^20858733696 is an apocalyptic number.

It is an amenable number.

20858733696 is an abundant number, since it is smaller than the sum of its proper divisors (34547278704).

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

20858733696 is an equidigital number, since it uses as much as digits as its factorization.

20858733696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54319636 (or 54319624 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 20858733696 in words is "twenty billion, eight hundred fifty-eight million, seven hundred thirty-three thousand, six hundred ninety-six".