33521403481 has 2 divisors, whose sum is σ = 33521403482. Its totient is φ = 33521403480.

The previous prime is 33521403451. The next prime is 33521403491. The reversal of 33521403481 is 18430412533.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31131073600 + 2390329881 = 176440^2 + 48891^2 .

It is a cyclic number.

It is not a de Polignac number, because 33521403481 - 2¹⁵ = 33521370713 is a prime.

It is a super-2 number, since 2×33521403481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33521403431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16760701740 + 16760701741.

It is an arithmetic number, because the mean of its divisors is an integer number (16760701741).

Almost surely, 2^33521403481 is an apocalyptic number.

It is an amenable number.

33521403481 is a deficient number, since it is larger than the sum of its proper divisors (1).

33521403481 is an equidigital number, since it uses as much as digits as its factorization.

33521403481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 33521403481 in words is "thirty-three billion, five hundred twenty-one million, four hundred three thousand, four hundred eighty-one".