6418988834836 has 6 divisors (see below), whose sum is σ = 11233230460970. Its totient is φ = 3209494417416.

The previous prime is 6418988834813. The next prime is 6418988834861. The reversal of 6418988834836 is 6384388898146.

It can be written as a sum of positive squares in only one way, i.e., 5985753696400 + 433235138436 = 2446580^2 + 658206^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 802373604351 + ... + 802373604358.

Almost surely, 2^{6418988834836} is an apocalyptic number.

It is an amenable number.

6418988834836 is a deficient number, since it is larger than the sum of its proper divisors (4814241626134).

6418988834836 is a wasteful number, since it uses less digits than its factorization.

6418988834836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604747208713 (or 1604747208711 counting only the distinct ones).

The product of its digits is 1528823808, while the sum is 76.

The spelling of 6418988834836 in words is "six trillion, four hundred eighteen billion, nine hundred eighty-eight million, eight hundred thirty-four thousand, eight hundred thirty-six".