15123730560 has 128 divisors (see below), whose sum is σ = 48241267200. Its totient is φ = 4030119936.

The previous prime is 15123730513. The next prime is 15123730591. The reversal of 15123730560 is 6503732151.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5219032 + ... + 5221928.

It is an arithmetic number, because the mean of its divisors is an integer number (376884900).

Almost surely, 2^15123730560 is an apocalyptic number.

15123730560 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 15123730560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24120633600).

15123730560 is an abundant number, since it is smaller than the sum of its proper divisors (33117536640).

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

15123730560 is a wasteful number, since it uses less digits than its factorization.

15123730560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5638 (or 5626 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 33.

The spelling of 15123730560 in words is "fifteen billion, one hundred twenty-three million, seven hundred thirty thousand, five hundred sixty".