33780283349 has 2 divisors, whose sum is σ = 33780283350. Its totient is φ = 33780283348.

The previous prime is 33780283301. The next prime is 33780283387. The reversal of 33780283349 is 94338208733.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30363062500 + 3417220849 = 174250^2 + 58457^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33780283349 is a prime.

It is a super-2 number, since 2×33780283349² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33780283297 and 33780283306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33780283399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16890141674 + 16890141675.

It is an arithmetic number, because the mean of its divisors is an integer number (16890141675).

Almost surely, 2^33780283349 is an apocalyptic number.

It is an amenable number.

33780283349 is a deficient number, since it is larger than the sum of its proper divisors (1).

33780283349 is an equidigital number, since it uses as much as digits as its factorization.

33780283349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 50.

The spelling of 33780283349 in words is "thirty-three billion, seven hundred eighty million, two hundred eighty-three thousand, three hundred forty-nine".