15278817048 has 128 divisors (see below), whose sum is σ = 44243781120. Its totient is φ = 4345436160.

The previous prime is 15278817041. The next prime is 15278817053. The reversal of 15278817048 is 84071887251.

15278817048 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15278817041) by changing a digit.

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, 1669461 + ... + 1678587.

It is an arithmetic number, because the mean of its divisors is an integer number (345654540).

Almost surely, 2^15278817048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15278817048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22121890560).

15278817048 is an abundant number, since it is smaller than the sum of its proper divisors (28964964072).

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

15278817048 is a wasteful number, since it uses less digits than its factorization.

15278817048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9537 (or 9533 counting only the distinct ones).

The product of its (nonzero) digits is 1003520, while the sum is 51.

The spelling of 15278817048 in words is "fifteen billion, two hundred seventy-eight million, eight hundred seventeen thousand, forty-eight".