20021837016736 has 48 divisors (see below), whose sum is σ = 39458310278184. Its totient is φ = 10000680914944.

The previous prime is 20021837016719. The next prime is 20021837016743. The reversal of 20021837016736 is 63761073812002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18961670250000 + 1060166766736 = 4354500^2 + 1029644^2 .

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 7 ways as a sum of consecutive naturals, for example, 380957436 + ... + 381009988.

Almost surely, 2^{20021837016736} is an apocalyptic number.

It is an amenable number.

20021837016736 is a deficient number, since it is larger than the sum of its proper divisors (19436473261448).

20021837016736 is a wasteful number, since it uses less digits than its factorization.

20021837016736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64513 (or 64505 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 20021837016736 in words is "twenty trillion, twenty-one billion, eight hundred thirty-seven million, sixteen thousand, seven hundred thirty-six".