15000505500000 has 336 divisors, whose sum is σ = 49328368588800. Its totient is φ = 3991310400000.

The previous prime is 15000505499999. The next prime is 15000505500011. The reversal of 15000505500000 is 550500051.

It is a self number, because there is not a number n which added to its sum of digits gives 15000505500000.

It is a congruent number.

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 55 ways as a sum of consecutive naturals, for example, 694489201 + ... + 694510799.

It is an arithmetic number, because the mean of its divisors is an integer number (146810620800).

Almost surely, 2^{15000505500000} is an apocalyptic number.

15000505500000 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 15000505500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24664184294400).

15000505500000 is an abundant number, since it is smaller than the sum of its proper divisors (34327863088800).

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

15000505500000 is an frugal number, since it uses more digits than its factorization.

15000505500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22105 (or 22072 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 21.

The spelling of 15000505500000 in words is "fifteen trillion, five hundred five million, five hundred thousand".