33678000673 has 2 divisors, whose sum is σ = 33678000674. Its totient is φ = 33678000672.

The previous prime is 33678000623. The next prime is 33678000731. The reversal of 33678000673 is 37600087633.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24770982544 + 8907018129 = 157388^2 + 94377^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33678000673 is a prime.

It is a super-2 number, since 2×33678000673² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33678000623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16839000336 + 16839000337.

It is an arithmetic number, because the mean of its divisors is an integer number (16839000337).

Almost surely, 2^33678000673 is an apocalyptic number.

It is an amenable number.

33678000673 is a deficient number, since it is larger than the sum of its proper divisors (1).

33678000673 is an equidigital number, since it uses as much as digits as its factorization.

33678000673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 43.

The spelling of 33678000673 in words is "thirty-three billion, six hundred seventy-eight million, six hundred seventy-three", and thus it is an aban number.