33085572078821 has 2 divisors, whose sum is σ = 33085572078822. Its totient is φ = 33085572078820.

The previous prime is 33085572078761. The next prime is 33085572078877. The reversal of 33085572078821 is 12887027558033.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25409563824100 + 7676008254721 = 5040790^2 + 2770561^2 .

It is a cyclic number.

It is not a de Polignac number, because 33085572078821 - 2¹⁰ = 33085572077797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33085572048821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16542786039410 + 16542786039411.

It is an arithmetic number, because the mean of its divisors is an integer number (16542786039411).

Almost surely, 2^{33085572078821} is an apocalyptic number.

It is an amenable number.

33085572078821 is a deficient number, since it is larger than the sum of its proper divisors (1).

33085572078821 is an equidigital number, since it uses as much as digits as its factorization.

33085572078821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22579200, while the sum is 59.

The spelling of 33085572078821 in words is "thirty-three trillion, eighty-five billion, five hundred seventy-two million, seventy-eight thousand, eight hundred twenty-one".