20016047663023 has 4 divisors (see below), whose sum is σ = 20269415355040. Its totient is φ = 19762679971008.

The previous prime is 20016047663009. The next prime is 20016047663039. The reversal of 20016047663023 is 32036674061002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20016047663023 is a prime.

It is a super-2 number, since 2×20016047663023² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20016047663323) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 126683845890 + ... + 126683846047.

It is an arithmetic number, because the mean of its divisors is an integer number (5067353838760).

Almost surely, 2^{20016047663023} is an apocalyptic number.

20016047663023 is a deficient number, since it is larger than the sum of its proper divisors (253367692017).

20016047663023 is an equidigital number, since it uses as much as digits as its factorization.

20016047663023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253367692016.

The product of its (nonzero) digits is 217728, while the sum is 40.

The spelling of 20016047663023 in words is "twenty trillion, sixteen billion, forty-seven million, six hundred sixty-three thousand, twenty-three".