33909343261 has 2 divisors, whose sum is σ = 33909343262. Its totient is φ = 33909343260.

The previous prime is 33909343249. The next prime is 33909343277. The reversal of 33909343261 is 16234390933.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17543002500 + 16366340761 = 132450^2 + 127931^2 .

It is an emirp because it is prime and its reverse (16234390933) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33909343261 - 2¹⁷ = 33909212189 is a prime.

It is a super-2 number, since 2×33909343261² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33909349261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16954671630 + 16954671631.

It is an arithmetic number, because the mean of its divisors is an integer number (16954671631).

Almost surely, 2^33909343261 is an apocalyptic number.

It is an amenable number.

33909343261 is a deficient number, since it is larger than the sum of its proper divisors (1).

33909343261 is an equidigital number, since it uses as much as digits as its factorization.

33909343261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 43.

The spelling of 33909343261 in words is "thirty-three billion, nine hundred nine million, three hundred forty-three thousand, two hundred sixty-one".