33936770381 has 2 divisors, whose sum is σ = 33936770382. Its totient is φ = 33936770380.

The previous prime is 33936770363. The next prime is 33936770383. The reversal of 33936770381 is 18307763933.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26696292100 + 7240478281 = 163390^2 + 85091^2 .

It is a cyclic number.

It is not a de Polignac number, because 33936770381 - 2¹⁴ = 33936753997 is a prime.

It is a super-2 number, since 2×33936770381² (a number of 22 digits) contains 22 as substring.

Together with 33936770383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33936770383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16968385190 + 16968385191.

It is an arithmetic number, because the mean of its divisors is an integer number (16968385191).

Almost surely, 2^33936770381 is an apocalyptic number.

It is an amenable number.

33936770381 is a deficient number, since it is larger than the sum of its proper divisors (1).

33936770381 is an equidigital number, since it uses as much as digits as its factorization.

33936770381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1714608, while the sum is 50.

The spelling of 33936770381 in words is "thirty-three billion, nine hundred thirty-six million, seven hundred seventy thousand, three hundred eighty-one".