33206728061 has 16 divisors (see below), whose sum is σ = 36006768000. Its totient is φ = 30442110528.

The previous prime is 33206728043. The next prime is 33206728073. The reversal of 33206728061 is 16082760233.

It is a cyclic number.

It is not a de Polignac number, because 33206728061 - 2¹⁸ = 33206465917 is a prime.

It is a super-2 number, since 2×33206728061² (a number of 22 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 (33206728361) 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 15 ways as a sum of consecutive naturals, for example, 2727215 + ... + 2739363.

It is an arithmetic number, because the mean of its divisors is an integer number (2250423000).

Almost surely, 2^33206728061 is an apocalyptic number.

It is an amenable number.

33206728061 is a deficient number, since it is larger than the sum of its proper divisors (2800039939).

33206728061 is a wasteful number, since it uses less digits than its factorization.

33206728061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13588.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 33206728061 in words is "thirty-three billion, two hundred six million, seven hundred twenty-eight thousand, sixty-one".