15478345744 has 45 divisors (see below), whose sum is σ = 31670098077. Its totient is φ = 7327369152.

The previous prime is 15478345739. The next prime is 15478345777. The reversal of 15478345744 is 44754387451.

The square root of 15478345744 is 124412.

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

It can be written as a sum of positive squares in only one way, i.e., 469155600 + 15009190144 = 21660^2 + 122512^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15478345691 and 15478345700.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 9454494 + ... + 9456130.

Almost surely, 2^15478345744 is an apocalyptic number.

15478345744 is the 124412-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15478345744

15478345744 is an abundant number, since it is smaller than the sum of its proper divisors (16191752333).

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

15478345744 is an frugal number, since it uses more digits than its factorization.

15478345744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320 (or 1658 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 52.

The spelling of 15478345744 in words is "fifteen billion, four hundred seventy-eight million, three hundred forty-five thousand, seven hundred forty-four".