15478716490000 has 75 divisors (see below), whose sum is σ = 37476473051523. Its totient is φ = 6191329224000.

The previous prime is 15478716489983. The next prime is 15478716490009. The reversal of 15478716490000 is 9461787451.

It is a happy number.

The square root of 15478716490000 is 3934300.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1213531372816 + 14265185117184 = 1101604^2 + 3776928^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15478716490000.

It is not an unprimeable number, because it can be changed into a prime (15478716490009) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 393410329 + ... + 393449671.

Almost surely, 2^{15478716490000} is an apocalyptic number.

15478716490000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15478716490000 is the 3934300-th square number.

It is an amenable number.

15478716490000 is an abundant number, since it is smaller than the sum of its proper divisors (21997756561523).

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

15478716490000 is an frugal number, since it uses more digits than its factorization.

15478716490000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78714 (or 39350 counting only the distinct ones).

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

The spelling of 15478716490000 in words is "fifteen trillion, four hundred seventy-eight billion, seven hundred sixteen million, four hundred ninety thousand".