33520220385 has 8 divisors (see below), whose sum is σ = 53632352640. Its totient is φ = 17877450864.

The previous prime is 33520220369. The next prime is 33520220389. The reversal of 33520220385 is 58302202533.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 33520220385 - 2⁴ = 33520220369 is a prime.

It is a super-2 number, since 2×33520220385² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33520220389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1117340665 + ... + 1117340694.

It is an arithmetic number, because the mean of its divisors is an integer number (6704044080).

Almost surely, 2^33520220385 is an apocalyptic number.

It is an amenable number.

33520220385 is a deficient number, since it is larger than the sum of its proper divisors (20112132255).

33520220385 is a wasteful number, since it uses less digits than its factorization.

33520220385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234681367.

The product of its (nonzero) digits is 43200, while the sum is 33.

The spelling of 33520220385 in words is "thirty-three billion, five hundred twenty million, two hundred twenty thousand, three hundred eighty-five".