13333432561 has 8 divisors (see below), whose sum is σ = 13796814240. Its totient is φ = 12877019232.

The previous prime is 13333432559. The next prime is 13333432577. The reversal of 13333432561 is 16523433331.

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

It is a cyclic number.

It is not a de Polignac number, because 13333432561 - 2¹ = 13333432559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13333432501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1738195 + ... + 1745848.

It is an arithmetic number, because the mean of its divisors is an integer number (1724601780).

Almost surely, 2^13333432561 is an apocalyptic number.

It is an amenable number.

13333432561 is a deficient number, since it is larger than the sum of its proper divisors (463381679).

13333432561 is an equidigital number, since it uses as much as digits as its factorization.

13333432561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3484175.

The product of its digits is 58320, while the sum is 34.

Adding to 13333432561 its reverse (16523433331), we get a palindrome (29856865892).

The spelling of 13333432561 in words is "thirteen billion, three hundred thirty-three million, four hundred thirty-two thousand, five hundred sixty-one".