33713407381 has 4 divisors (see below), whose sum is σ = 34875938700. Its totient is φ = 32550876064.

The previous prime is 33713407367. The next prime is 33713407423. The reversal of 33713407381 is 18370431733.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18370431733 = 653 ⋅28132361.

It can be written as a sum of positive squares in 2 ways, for example, as 14594814481 + 19118592900 = 120809^2 + 138270^2 .

It is a cyclic number.

It is not a de Polignac number, because 33713407381 - 2⁹ = 33713406869 is a prime.

It is a super-2 number, since 2×33713407381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33713404381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581265616 + ... + 581265673.

It is an arithmetic number, because the mean of its divisors is an integer number (8718984675).

Almost surely, 2^33713407381 is an apocalyptic number.

It is an amenable number.

33713407381 is a deficient number, since it is larger than the sum of its proper divisors (1162531319).

33713407381 is a wasteful number, since it uses less digits than its factorization.

33713407381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162531318.

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 33713407381 in words is "thirty-three billion, seven hundred thirteen million, four hundred seven thousand, three hundred eighty-one".