15478420348980 has 192 divisors, whose sum is σ = 48260733185280. Its totient is φ = 4118528913408.

The previous prime is 15478420348973. The next prime is 15478420349003. The reversal of 15478420348980 is 8984302487451.

It is a happy number.

15478420348980 is a `hidden beast` number, since 1 + 5 + 4 + 78 + 4 + 2 + 0 + 3 + 489 + 80 = 666.

15478420348980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 978586032 + ... + 978601848.

It is an arithmetic number, because the mean of its divisors is an integer number (251357985340).

Almost surely, 2^{15478420348980} is an apocalyptic number.

15478420348980 is a gapful number since it is divisible by the number (10) 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 15478420348980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24130366592640).

15478420348980 is an abundant number, since it is smaller than the sum of its proper divisors (32782312836300).

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

15478420348980 is a wasteful number, since it uses less digits than its factorization.

15478420348980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19695 (or 19687 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 63.

The spelling of 15478420348980 in words is "fifteen trillion, four hundred seventy-eight billion, four hundred twenty million, three hundred forty-eight thousand, nine hundred eighty".