3081939721533 has 12 divisors (see below), whose sum is σ = 4501709706780. Its totient is φ = 2031540789696.

The previous prime is 3081939721519. The next prime is 3081939721537. The reversal of 3081939721533 is 3351279391803.

3081939721533 is a `hidden beast` number, since 3 + 0 + 8 + 1 + 9 + 39 + 72 + 1 + 533 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1470733456644 + 1611206264889 = 1212738^2 + 1269333^2 .

It is not a de Polignac number, because 3081939721533 - 2¹⁷ = 3081939590461 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3081939721533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3081939721537) 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 11 ways as a sum of consecutive naturals, for example, 1923806766 + ... + 1923808367.

It is an arithmetic number, because the mean of its divisors is an integer number (375142475565).

Almost surely, 2^{3081939721533} is an apocalyptic number.

It is an amenable number.

3081939721533 is a deficient number, since it is larger than the sum of its proper divisors (1419769985247).

3081939721533 is a wasteful number, since it uses less digits than its factorization.

3081939721533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3847615228 (or 3847615225 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 54.

The spelling of 3081939721533 in words is "three trillion, eighty-one billion, nine hundred thirty-nine million, seven hundred twenty-one thousand, five hundred thirty-three".