15489321120 has 1152 divisors, whose sum is σ = 70626608640. Its totient is φ = 3085516800.

The previous prime is 15489321119. The next prime is 15489321139. The reversal of 15489321120 is 2112398451.

15489321120 is a `hidden beast` number, since 1 + 548 + 93 + 2 + 1 + 1 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 377788300 + ... + 377788340.

It is an arithmetic number, because the mean of its divisors is an integer number (61307820).

Almost surely, 2^15489321120 is an apocalyptic number.

15489321120 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 15489321120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35313304320).

15489321120 is an abundant number, since it is smaller than the sum of its proper divisors (55137287520).

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

15489321120 is a wasteful number, since it uses less digits than its factorization.

15489321120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 15489321120 in words is "fifteen billion, four hundred eighty-nine million, three hundred twenty-one thousand, one hundred twenty".