15502443145 has 24 divisors (see below), whose sum is σ = 22018935744. Its totient is φ = 10263667008.

The previous prime is 15502443139. The next prime is 15502443163. The reversal of 15502443145 is 54134420551.

It is not a de Polignac number, because 15502443145 - 2³ = 15502443137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15502443145.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 233899 + ... + 292768.

It is an arithmetic number, because the mean of its divisors is an integer number (917455656).

Almost surely, 2^15502443145 is an apocalyptic number.

It is an amenable number.

15502443145 is a deficient number, since it is larger than the sum of its proper divisors (6516492599).

15502443145 is an equidigital number, since it uses as much as digits as its factorization.

15502443145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526737 (or 526708 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 15502443145 its reverse (54134420551), we get a palindrome (69636863696).

The spelling of 15502443145 in words is "fifteen billion, five hundred two million, four hundred forty-three thousand, one hundred forty-five".