33673985749 has 2 divisors, whose sum is σ = 33673985750. Its totient is φ = 33673985748.

The previous prime is 33673985743. The next prime is 33673985759. The reversal of 33673985749 is 94758937633.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28313110225 + 5360875524 = 168265^2 + 73218^2 .

It is a cyclic number.

It is not a de Polignac number, because 33673985749 - 2⁵ = 33673985717 is a prime.

It is a super-2 number, since 2×33673985749² (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 (33673985743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16836992874 + 16836992875.

It is an arithmetic number, because the mean of its divisors is an integer number (16836992875).

Almost surely, 2^33673985749 is an apocalyptic number.

It is an amenable number.

33673985749 is a deficient number, since it is larger than the sum of its proper divisors (1).

33673985749 is an equidigital number, since it uses as much as digits as its factorization.

33673985749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102876480, while the sum is 64.

The spelling of 33673985749 in words is "thirty-three billion, six hundred seventy-three million, nine hundred eighty-five thousand, seven hundred forty-nine".