28147129382648 has 8 divisors (see below), whose sum is σ = 52775867592480. Its totient is φ = 14073564691320.

The previous prime is 28147129382641. The next prime is 28147129382651. The reversal of 28147129382648 is 84628392174182.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28147129382641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1759195586408 + ... + 1759195586423.

It is an arithmetic number, because the mean of its divisors is an integer number (6596983449060).

Almost surely, 2^{28147129382648} is an apocalyptic number.

It is an amenable number.

28147129382648 is a deficient number, since it is larger than the sum of its proper divisors (24628738209832).

28147129382648 is a wasteful number, since it uses less digits than its factorization.

28147129382648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3518391172837 (or 3518391172833 counting only the distinct ones).

The product of its digits is 74317824, while the sum is 65.

The spelling of 28147129382648 in words is "twenty-eight trillion, one hundred forty-seven billion, one hundred twenty-nine million, three hundred eighty-two thousand, six hundred forty-eight".