33687411481 has 2 divisors, whose sum is σ = 33687411482. Its totient is φ = 33687411480.

The previous prime is 33687411479. The next prime is 33687411553. The reversal of 33687411481 is 18411478633.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20074355856 + 13613055625 = 141684^2 + 116675^2 .

It is a cyclic number.

It is not a de Polignac number, because 33687411481 - 2¹ = 33687411479 is a prime.

It is a super-2 number, since 2×33687411481² (a number of 22 digits) contains 22 as substring.

Together with 33687411479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (33687411451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16843705740 + 16843705741.

It is an arithmetic number, because the mean of its divisors is an integer number (16843705741).

Almost surely, 2^33687411481 is an apocalyptic number.

It is an amenable number.

33687411481 is a deficient number, since it is larger than the sum of its proper divisors (1).

33687411481 is an equidigital number, since it uses as much as digits as its factorization.

33687411481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 46.

The spelling of 33687411481 in words is "thirty-three billion, six hundred eighty-seven million, four hundred eleven thousand, four hundred eighty-one".