33428313572671 has 4 divisors (see below), whose sum is σ = 33428355603952. Its totient is φ = 33428271541392.

The previous prime is 33428313572669. The next prime is 33428313572707. The reversal of 33428313572671 is 17627531382433.

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 33428313572671 - 2¹ = 33428313572669 is a prime.

It is a super-2 number, since 2×33428313572671² (a number of 28 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 (33428313572371) 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, 19799190 + ... + 21421123.

It is an arithmetic number, because the mean of its divisors is an integer number (8357088900988).

Almost surely, 2^{33428313572671} is an apocalyptic number.

33428313572671 is a deficient number, since it is larger than the sum of its proper divisors (42031281).

33428313572671 is an equidigital number, since it uses as much as digits as its factorization.

33428313572671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42031280.

The product of its digits is 15240960, while the sum is 55.

The spelling of 33428313572671 in words is "thirty-three trillion, four hundred twenty-eight billion, three hundred thirteen million, five hundred seventy-two thousand, six hundred seventy-one".