15478580223828 has 72 divisors (see below), whose sum is σ = 39974863289088. Its totient is φ = 5047730716608.

The previous prime is 15478580223823. The next prime is 15478580223829. The reversal of 15478580223828 is 82832208587451.

15478580223828 is a `hidden beast` number, since 1 + 5 + 4 + 7 + 8 + 580 + 2 + 23 + 8 + 28 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15478580223823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2407650 + ... + 6062502.

Almost surely, 2^{15478580223828} is an apocalyptic number.

15478580223828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15478580223828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19987431644544).

15478580223828 is an abundant number, since it is smaller than the sum of its proper divisors (24496283065260).

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

15478580223828 is a wasteful number, since it uses less digits than its factorization.

15478580223828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3657413 (or 3657408 counting only the distinct ones).

The product of its (nonzero) digits is 68812800, while the sum is 63.

The spelling of 15478580223828 in words is "fifteen trillion, four hundred seventy-eight billion, five hundred eighty million, two hundred twenty-three thousand, eight hundred twenty-eight".