15128016016 has 45 divisors (see below), whose sum is σ = 29709536619. Its totient is φ = 7462413312.

The previous prime is 15128015983. The next prime is 15128016017. The reversal of 15128016016 is 61061082151.

The square root of 15128016016 is 122996.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 4789193616 + 10338822400 = 69204^2 + 101680^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15128016017) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 47722290 + ... + 47722606.

Almost surely, 2^15128016016 is an apocalyptic number.

15128016016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

15128016016 is the 122996-th square number.

It is an amenable number.

15128016016 is a deficient number, since it is larger than the sum of its proper divisors (14581520603).

15128016016 is an frugal number, since it uses more digits than its factorization.

15128016016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 31.

Adding to 15128016016 its reverse (61061082151), we get a palindrome (76189098167).

The spelling of 15128016016 in words is "fifteen billion, one hundred twenty-eight million, sixteen thousand, sixteen".