15548861220 has 96 divisors (see below), whose sum is σ = 44773803648. Its totient is φ = 4030021632.

The previous prime is 15548861179. The next prime is 15548861233. The reversal of 15548861220 is 2216884551.

15548861220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 31 ways as a sum of consecutive naturals, for example, 317412 + ... + 363108.

It is an arithmetic number, because the mean of its divisors is an integer number (466393788).

Almost surely, 2^15548861220 is an apocalyptic number.

15548861220 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 15548861220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22386901824).

15548861220 is an abundant number, since it is smaller than the sum of its proper divisors (29224942428).

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

15548861220 is a wasteful number, since it uses less digits than its factorization.

15548861220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45869 (or 45867 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 42.

The spelling of 15548861220 in words is "fifteen billion, five hundred forty-eight million, eight hundred sixty-one thousand, two hundred twenty".