33145493321 has 2 divisors, whose sum is σ = 33145493322. Its totient is φ = 33145493320.

The previous prime is 33145493261. The next prime is 33145493333. The reversal of 33145493321 is 12339454133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20810947600 + 12334545721 = 144260^2 + 111061^2 .

It is a cyclic number.

It is not a de Polignac number, because 33145493321 - 2⁶ = 33145493257 is a prime.

It is not a weakly prime, because it can be changed into another prime (33145493371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16572746660 + 16572746661.

It is an arithmetic number, because the mean of its divisors is an integer number (16572746661).

Almost surely, 2^33145493321 is an apocalyptic number.

It is an amenable number.

33145493321 is a deficient number, since it is larger than the sum of its proper divisors (1).

33145493321 is an equidigital number, since it uses as much as digits as its factorization.

33145493321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 38.

The spelling of 33145493321 in words is "thirty-three billion, one hundred forty-five million, four hundred ninety-three thousand, three hundred twenty-one".