15045440000 has 100 divisors (see below), whose sum is σ = 37565642334. Its totient is φ = 6018048000.

The previous prime is 15045439973. The next prime is 15045440029. The reversal of 15045440000 is 4454051.

It can be written as a sum of positive squares in 5 ways, for example, as 2433251584 + 12612188416 = 49328^2 + 112304^2 .

It is a tau number, because it is divible by the number of its divisors (100).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 296492 + ... + 343508.

Almost surely, 2^15045440000 is an apocalyptic number.

15045440000 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 15045440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18782821167).

15045440000 is an abundant number, since it is smaller than the sum of its proper divisors (22520202334).

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

15045440000 is an frugal number, since it uses more digits than its factorization.

15045440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47055 (or 47024 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 15045440000 its reverse (4454051), we get a palindrome (15049894051).

The spelling of 15045440000 in words is "fifteen billion, forty-five million, four hundred forty thousand".