15478716490 has 12 divisors (see below), whose sum is σ = 27862397874. Its totient is φ = 6191329224.

The previous prime is 15478716481. The next prime is 15478716521. The reversal of 15478716490 is 9461787451.

It is a happy number.

15478716490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 13930844841 + 1547871649 = 118029^2 + 39343^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 373759 + ... + 413101.

Almost surely, 2^15478716490 is an apocalyptic number.

15478716490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15478716490 is a deficient number, since it is larger than the sum of its proper divisors (12383681384).

15478716490 is an frugal number, since it uses more digits than its factorization.

15478716490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78693 (or 39350 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 15478716490 in words is "fifteen billion, four hundred seventy-eight million, seven hundred sixteen thousand, four hundred ninety".