16023641533 has 4 divisors (see below), whose sum is σ = 16966208700. Its totient is φ = 15081074368.

The previous prime is 16023641503. The next prime is 16023641551. The reversal of 16023641533 is 33514632061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33514632061 = 18211 ⋅1840351.

It can be written as a sum of positive squares in 2 ways, for example, as 9147583449 + 6876058084 = 95643^2 + 82922^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16023641533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16023641503) 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, 471283558 + ... + 471283591.

It is an arithmetic number, because the mean of its divisors is an integer number (4241552175).

Almost surely, 2^16023641533 is an apocalyptic number.

It is an amenable number.

16023641533 is a deficient number, since it is larger than the sum of its proper divisors (942567167).

16023641533 is an equidigital number, since it uses as much as digits as its factorization.

16023641533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942567166.

The product of its (nonzero) digits is 38880, while the sum is 34.

The spelling of 16023641533 in words is "sixteen billion, twenty-three million, six hundred forty-one thousand, five hundred thirty-three".