6735447981018 has 28 divisors (see below), whose sum is σ = 15147828487338. Its totient is φ = 2245149326520.

The previous prime is 6735447981013. The next prime is 6735447981121. The reversal of 6735447981018 is 8101897445376.

6735447981018 is a `hidden beast` number, since 6 + 7 + 3 + 54 + 479 + 8 + 101 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3978098063289 + 2757349917729 = 1994517^2 + 1660527^2 .

It is not an unprimeable number, because it can be changed into a prime (6735447981013) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 2309822953 + ... + 2309825868.

Almost surely, 2^{6735447981018} is an apocalyptic number.

6735447981018 is an abundant number, since it is smaller than the sum of its proper divisors (8412380506320).

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

6735447981018 is an equidigital number, since it uses as much as digits as its factorization.

6735447981018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4619648841 (or 4619648826 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 63.

The spelling of 6735447981018 in words is "six trillion, seven hundred thirty-five billion, four hundred forty-seven million, nine hundred eighty-one thousand, eighteen".