15320405345 has 8 divisors (see below), whose sum is σ = 21010841664. Its totient is φ = 10505420784.

The previous prime is 15320405327. The next prime is 15320405357. The reversal of 15320405345 is 54350402351.

It is a happy number.

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 15320405345 - 2¹² = 15320401249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218862899 + ... + 218862968.

It is an arithmetic number, because the mean of its divisors is an integer number (2626355208).

Almost surely, 2^15320405345 is an apocalyptic number.

It is an amenable number.

15320405345 is a deficient number, since it is larger than the sum of its proper divisors (5690436319).

15320405345 is an equidigital number, since it uses as much as digits as its factorization.

15320405345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437725879.

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 15320405345 its reverse (54350402351), we get a palindrome (69670807696).

The spelling of 15320405345 in words is "fifteen billion, three hundred twenty million, four hundred five thousand, three hundred forty-five".