108978471647 has 8 divisors (see below), whose sum is σ = 109194811776. Its totient is φ = 108762337432.

The previous prime is 108978471587. The next prime is 108978471673. The reversal of 108978471647 is 746174879801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 108978471647 - 2¹² = 108978467551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 108978471647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108978471047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1030478 + ... + 1131300.

It is an arithmetic number, because the mean of its divisors is an integer number (13649351472).

Almost surely, 2^108978471647 is an apocalyptic number.

108978471647 is a deficient number, since it is larger than the sum of its proper divisors (216340129).

108978471647 is a wasteful number, since it uses less digits than its factorization.

108978471647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102957.

The product of its (nonzero) digits is 18966528, while the sum is 62.

The spelling of 108978471647 in words is "one hundred eight billion, nine hundred seventy-eight million, four hundred seventy-one thousand, six hundred forty-seven".