16021323063 has 48 divisors (see below), whose sum is σ = 24314035200. Its totient is φ = 10153797120.

The previous prime is 16021323041. The next prime is 16021323167. The reversal of 16021323063 is 36032312061.

It is a happy number.

16021323063 is a `hidden beast` number, since 160 + 213 + 230 + 63 = 666.

It is not a de Polignac number, because 16021323063 - 2¹⁸ = 16021060919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16021323023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3759628 + ... + 3763886.

It is an arithmetic number, because the mean of its divisors is an integer number (506542400).

Almost surely, 2^16021323063 is an apocalyptic number.

16021323063 is a deficient number, since it is larger than the sum of its proper divisors (8292712137).

16021323063 is a wasteful number, since it uses less digits than its factorization.

16021323063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4532 (or 4529 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The spelling of 16021323063 in words is "sixteen billion, twenty-one million, three hundred twenty-three thousand, sixty-three".