13045433220 has 36 divisors (see below), whose sum is σ = 39571147980. Its totient is φ = 3478782144.

The previous prime is 13045433213. The next prime is 13045433239. The reversal of 13045433220 is 2233454031.

13045433220 is a `hidden beast` number, since 1 + 3 + 0 + 4 + 5 + 433 + 220 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2618164224 + 10427268996 = 51168^2 + 102114^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36237135 + ... + 36237494.

It is an arithmetic number, because the mean of its divisors is an integer number (1099198555).

Almost surely, 2^13045433220 is an apocalyptic number.

13045433220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13045433220 is an abundant number, since it is smaller than the sum of its proper divisors (26525714760).

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

13045433220 is a wasteful number, since it uses less digits than its factorization.

13045433220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72474644 (or 72474639 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 13045433220 its reverse (2233454031), we get a palindrome (15278887251).

The spelling of 13045433220 in words is "thirteen billion, forty-five million, four hundred thirty-three thousand, two hundred twenty".