15879045632 has 30 divisors (see below), whose sum is σ = 31732775613. Its totient is φ = 7938097152.

The previous prime is 15879045631. The next prime is 15879045683. The reversal of 15879045632 is 23654097851.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 14052679936 + 1826365696 = 118544^2 + 42736^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=89104.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15879045631) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 2848544 + ... + 2854112.

It is a 2-persistent number, because it is pandigital, and so is 2⋅15879045632 = 31758091264, but 3⋅15879045632 = 47637136896 is not.

Almost surely, 2^15879045632 is an apocalyptic number.

It is an amenable number.

15879045632 is a deficient number, since it is larger than the sum of its proper divisors (15853729981).

15879045632 is an frugal number, since it uses more digits than its factorization.

15879045632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11156 (or 5571 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 50.

Multiplying 15879045632 by its sum of digits (50), we get a square (793952281600 = 891040²).

The spelling of 15879045632 in words is "fifteen billion, eight hundred seventy-nine million, forty-five thousand, six hundred thirty-two".