33213035545 has 4 divisors (see below), whose sum is σ = 39855642660. Its totient is φ = 26570428432.

The previous prime is 33213035539. The next prime is 33213035549. The reversal of 33213035545 is 54553031233.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54553031233 = 9221 ⋅5916173.

It can be written as a sum of positive squares in 2 ways, for example, as 6560514009 + 26652521536 = 80997^2 + 163256^2 .

It is a cyclic number.

It is not a de Polignac number, because 33213035545 - 2⁹ = 33213035033 is a prime.

It is a super-2 number, since 2×33213035545² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33213035545.

It is not an unprimeable number, because it can be changed into a prime (33213035549) 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, 3321303550 + ... + 3321303559.

It is an arithmetic number, because the mean of its divisors is an integer number (9963910665).

Almost surely, 2^33213035545 is an apocalyptic number.

It is an amenable number.

33213035545 is a deficient number, since it is larger than the sum of its proper divisors (6642607115).

33213035545 is an equidigital number, since it uses as much as digits as its factorization.

33213035545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6642607114.

The product of its (nonzero) digits is 81000, while the sum is 34.

Adding to 33213035545 its reverse (54553031233), we get a palindrome (87766066778).

The spelling of 33213035545 in words is "thirty-three billion, two hundred thirteen million, thirty-five thousand, five hundred forty-five".