33426694381 has 2 divisors, whose sum is σ = 33426694382. Its totient is φ = 33426694380.

The previous prime is 33426694373. The next prime is 33426694393. The reversal of 33426694381 is 18349662433.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33324502500 + 102191881 = 182550^2 + 10109^2 .

It is a cyclic number.

It is not a de Polignac number, because 33426694381 - 2³ = 33426694373 is a prime.

It is a super-2 number, since 2×33426694381² (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 (33426694481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16713347190 + 16713347191.

It is an arithmetic number, because the mean of its divisors is an integer number (16713347191).

Almost surely, 2^33426694381 is an apocalyptic number.

It is an amenable number.

33426694381 is a deficient number, since it is larger than the sum of its proper divisors (1).

33426694381 is an equidigital number, since it uses as much as digits as its factorization.

33426694381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2239488, while the sum is 49.

The spelling of 33426694381 in words is "thirty-three billion, four hundred twenty-six million, six hundred ninety-four thousand, three hundred eighty-one".