33545145424 has 80 divisors (see below), whose sum is σ = 77000035968. Its totient is φ = 13857025536.

The previous prime is 33545145397. The next prime is 33545145463. The reversal of 33545145424 is 42454154533.

It is a super-2 number, since 2×33545145424² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405582 + ... + 481234.

Almost surely, 2^33545145424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33545145424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38500017984).

33545145424 is an abundant number, since it is smaller than the sum of its proper divisors (43454890544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33545145424 is a wasteful number, since it uses less digits than its factorization.

33545145424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75812 (or 75806 counting only the distinct ones).

The product of its digits is 576000, while the sum is 40.

Adding to 33545145424 its reverse (42454154533), we get a palindrome (75999299957).

The spelling of 33545145424 in words is "thirty-three billion, five hundred forty-five million, one hundred forty-five thousand, four hundred twenty-four".