20016837016835 has 4 divisors (see below), whose sum is σ = 24020204420208. Its totient is φ = 16013469613464.

The previous prime is 20016837016831. The next prime is 20016837016867. The reversal of 20016837016835 is 53861073861002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20016837016835 - 2² = 20016837016831 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20016837016831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2001683701679 + ... + 2001683701688.

It is an arithmetic number, because the mean of its divisors is an integer number (6005051105052).

Almost surely, 2^{20016837016835} is an apocalyptic number.

20016837016835 is a deficient number, since it is larger than the sum of its proper divisors (4003367403373).

20016837016835 is an equidigital number, since it uses as much as digits as its factorization.

20016837016835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003367403372.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 20016837016835 in words is "twenty trillion, sixteen billion, eight hundred thirty-seven million, sixteen thousand, eight hundred thirty-five".