15481942784 has 432 divisors, whose sum is σ = 41900937120. Its totient is φ = 5635768320.

The previous prime is 15481942769. The next prime is 15481942793. The reversal of 15481942784 is 48724918451.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 212081372 + ... + 212081444.

It is an arithmetic number, because the mean of its divisors is an integer number (96992910).

Almost surely, 2^15481942784 is an apocalyptic number.

15481942784 is a gapful number since it is divisible by the number (14) 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 15481942784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20950468560).

15481942784 is an abundant number, since it is smaller than the sum of its proper divisors (26418994336).

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

15481942784 is a wasteful number, since it uses less digits than its factorization.

15481942784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 175 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 53.

The spelling of 15481942784 in words is "fifteen billion, four hundred eighty-one million, nine hundred forty-two thousand, seven hundred eighty-four".