15120051500 has 24 divisors (see below), whose sum is σ = 33022193568. Its totient is φ = 6048020400.

The previous prime is 15120051487. The next prime is 15120051509. The reversal of 15120051500 is 515002151.

It is a happy number.

15120051500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (15120051509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15119552 + ... + 15120551.

It is an arithmetic number, because the mean of its divisors is an integer number (1375924732).

Almost surely, 2^15120051500 is an apocalyptic number.

15120051500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15120051500 is an abundant number, since it is smaller than the sum of its proper divisors (17902142068).

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

15120051500 is a wasteful number, since it uses less digits than its factorization.

15120051500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30240122 (or 30240110 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 20.

Adding to 15120051500 its reverse (515002151), we get a palindrome (15635053651).

The spelling of 15120051500 in words is "fifteen billion, one hundred twenty million, fifty-one thousand, five hundred".