33874211381 has 2 divisors, whose sum is σ = 33874211382. Its totient is φ = 33874211380.

The previous prime is 33874211323. The next prime is 33874211411. The reversal of 33874211381 is 18311247833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22985288881 + 10888922500 = 151609^2 + 104350^2 .

It is a cyclic number.

It is not a de Polignac number, because 33874211381 - 2¹⁸ = 33873949237 is a prime.

It is a super-2 number, since 2×33874211381² (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 (33874211081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16937105690 + 16937105691.

It is an arithmetic number, because the mean of its divisors is an integer number (16937105691).

Almost surely, 2^33874211381 is an apocalyptic number.

It is an amenable number.

33874211381 is a deficient number, since it is larger than the sum of its proper divisors (1).

33874211381 is an equidigital number, since it uses as much as digits as its factorization.

33874211381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 41.

The spelling of 33874211381 in words is "thirty-three billion, eight hundred seventy-four million, two hundred eleven thousand, three hundred eighty-one".