33544478749 has 2 divisors, whose sum is σ = 33544478750. Its totient is φ = 33544478748.

The previous prime is 33544478683. The next prime is 33544478771. The reversal of 33544478749 is 94787444533.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22719532900 + 10824945849 = 150730^2 + 104043^2 .

It is a cyclic number.

It is not a de Polignac number, because 33544478749 - 2²⁷ = 33410261021 is a prime.

It is a super-2 number, since 2×33544478749² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33544478693 and 33544478702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33544478789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16772239374 + 16772239375.

It is an arithmetic number, because the mean of its divisors is an integer number (16772239375).

Almost surely, 2^33544478749 is an apocalyptic number.

It is an amenable number.

33544478749 is a deficient number, since it is larger than the sum of its proper divisors (1).

33544478749 is an equidigital number, since it uses as much as digits as its factorization.

33544478749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40642560, while the sum is 58.

The spelling of 33544478749 in words is "thirty-three billion, five hundred forty-four million, four hundred seventy-eight thousand, seven hundred forty-nine".