15120105320 has 64 divisors (see below), whose sum is σ = 36078151680. Its totient is φ = 5683311616.

The previous prime is 15120105311. The next prime is 15120105331. The reversal of 15120105320 is 2350102151.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 15120105292 and 15120105301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 422777 + ... + 457143.

It is an arithmetic number, because the mean of its divisors is an integer number (563721120).

Almost surely, 2^15120105320 is an apocalyptic number.

15120105320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15120105320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18039075840).

15120105320 is an abundant number, since it is smaller than the sum of its proper divisors (20958046360).

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

15120105320 is a wasteful number, since it uses less digits than its factorization.

15120105320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35042 (or 35038 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

Adding to 15120105320 its reverse (2350102151), we get a palindrome (17470207471).

The spelling of 15120105320 in words is "fifteen billion, one hundred twenty million, one hundred five thousand, three hundred twenty".