15530345223 has 32 divisors (see below), whose sum is σ = 22891424256. Its totient is φ = 9315575808.

The previous prime is 15530345209. The next prime is 15530345261. The reversal of 15530345223 is 32254303551.

It is not a de Polignac number, because 15530345223 - 2⁸ = 15530344967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15530345293) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3332511 + ... + 3337167.

It is an arithmetic number, because the mean of its divisors is an integer number (715357008).

Almost surely, 2^15530345223 is an apocalyptic number.

15530345223 is a deficient number, since it is larger than the sum of its proper divisors (7361079033).

15530345223 is a wasteful number, since it uses less digits than its factorization.

15530345223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7543.

The product of its (nonzero) digits is 54000, while the sum is 33.

Adding to 15530345223 its reverse (32254303551), we get a palindrome (47784648774).

The spelling of 15530345223 in words is "fifteen billion, five hundred thirty million, three hundred forty-five thousand, two hundred twenty-three".