33378400343 has 2 divisors, whose sum is σ = 33378400344. Its totient is φ = 33378400342.

The previous prime is 33378400337. The next prime is 33378400397. The reversal of 33378400343 is 34300487333.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33378400343 - 2⁸ = 33378400087 is a prime.

It is a super-2 number, since 2×33378400343² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33378400297 and 33378400306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33378400313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16689200171 + 16689200172.

It is an arithmetic number, because the mean of its divisors is an integer number (16689200172).

Almost surely, 2^33378400343 is an apocalyptic number.

33378400343 is a deficient number, since it is larger than the sum of its proper divisors (1).

33378400343 is an equidigital number, since it uses as much as digits as its factorization.

33378400343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 38.

Adding to 33378400343 its reverse (34300487333), we get a palindrome (67678887676).

The spelling of 33378400343 in words is "thirty-three billion, three hundred seventy-eight million, four hundred thousand, three hundred forty-three".