15549428848380 has 576 divisors, whose sum is σ = 56519666380800. Its totient is φ = 3170398371840.

The previous prime is 15549428848379. The next prime is 15549428848423. The reversal of 15549428848380 is 8384882494551.

It is a congruent number.

It is an unprimeable number.

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 191 ways as a sum of consecutive naturals, for example, 63950076 + ... + 64192764.

It is an arithmetic number, because the mean of its divisors is an integer number (98124420800).

Almost surely, 2^{15549428848380} is an apocalyptic number.

15549428848380 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 15549428848380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28259833190400).

15549428848380 is an abundant number, since it is smaller than the sum of its proper divisors (40970237532420).

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

15549428848380 is a wasteful number, since it uses less digits than its factorization.

15549428848380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242802 (or 242793 counting only the distinct ones).

The product of its (nonzero) digits is 353894400, while the sum is 69.

The spelling of 15549428848380 in words is "fifteen trillion, five hundred forty-nine billion, four hundred twenty-eight million, eight hundred forty-eight thousand, three hundred eighty".