6985439369855 has 8 divisors (see below), whose sum is σ = 8382641777664. Its totient is φ = 5588275140000.

The previous prime is 6985439369849. The next prime is 6985439369911. The reversal of 6985439369855 is 5589639345896.

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

It is not a de Polignac number, because 6985439369855 - 2²⁴ = 6985422592639 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 6985439369855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9140396 + ... + 9875105.

It is an arithmetic number, because the mean of its divisors is an integer number (1047830222208).

Almost surely, 2^{6985439369855} is an apocalyptic number.

6985439369855 is a deficient number, since it is larger than the sum of its proper divisors (1397202407809).

6985439369855 is a wasteful number, since it uses less digits than its factorization.

6985439369855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19088977.

The product of its digits is 7558272000, while the sum is 80.

The spelling of 6985439369855 in words is "six trillion, nine hundred eighty-five billion, four hundred thirty-nine million, three hundred sixty-nine thousand, eight hundred fifty-five".