15928426816 has 14 divisors (see below), whose sum is σ = 31607972090. Its totient is φ = 7964213376.

The previous prime is 15928426783. The next prime is 15928426817. The reversal of 15928426816 is 61862482951.

It can be written as a sum of positive squares in only one way, i.e., 11715897600 + 4212529216 = 108240^2 + 64904^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15928426817) 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 as a sum of consecutive naturals, namely, 124440771 + ... + 124440898.

Almost surely, 2^15928426816 is an apocalyptic number.

15928426816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15928426816 is a deficient number, since it is larger than the sum of its proper divisors (15679545274).

15928426816 is an equidigital number, since it uses as much as digits as its factorization.

15928426816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248881681 (or 248881671 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 52.

The spelling of 15928426816 in words is "fifteen billion, nine hundred twenty-eight million, four hundred twenty-six thousand, eight hundred sixteen".