33661028481 has 4 divisors (see below), whose sum is σ = 44881371312. Its totient is φ = 22440685652.

The previous prime is 33661028431. The next prime is 33661028519. The reversal of 33661028481 is 18482016633.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33661028481 - 2⁶ = 33661028417 is a prime.

It is a super-2 number, since 2×33661028481² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33661028411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5610171411 + ... + 5610171416.

It is an arithmetic number, because the mean of its divisors is an integer number (11220342828).

Almost surely, 2^33661028481 is an apocalyptic number.

It is an amenable number.

33661028481 is a deficient number, since it is larger than the sum of its proper divisors (11220342831).

33661028481 is a wasteful number, since it uses less digits than its factorization.

33661028481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11220342830.

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 33661028481 in words is "thirty-three billion, six hundred sixty-one million, twenty-eight thousand, four hundred eighty-one".