4189621268533 has 4 divisors (see below), whose sum is σ = 4204746255340. Its totient is φ = 4174496281728.

The previous prime is 4189621268519. The next prime is 4189621268543. The reversal of 4189621268533 is 3358621269814.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1025516731684 + 3164104536849 = 1012678^2 + 1778793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4189621268533 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 (4189621268543) 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, 7562492988 + ... + 7562493541.

It is an arithmetic number, because the mean of its divisors is an integer number (1051186563835).

Almost surely, 2^{4189621268533} is an apocalyptic number.

It is an amenable number.

4189621268533 is a deficient number, since it is larger than the sum of its proper divisors (15124986807).

4189621268533 is a wasteful number, since it uses less digits than its factorization.

4189621268533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15124986806.

The product of its digits is 14929920, while the sum is 58.

The spelling of 4189621268533 in words is "four trillion, one hundred eighty-nine billion, six hundred twenty-one million, two hundred sixty-eight thousand, five hundred thirty-three".