8198837406865 has 64 divisors (see below), whose sum is σ = 12156831129600. Its totient is φ = 5287725757440.

The previous prime is 8198837406853. The next prime is 8198837406871. The reversal of 8198837406865 is 5686047388918.

It is not a de Polignac number, because 8198837406865 - 2⁵ = 8198837406833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42791419 + ... + 42982591.

It is an arithmetic number, because the mean of its divisors is an integer number (189950486400).

Almost surely, 2^{8198837406865} is an apocalyptic number.

8198837406865 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8198837406865 is a deficient number, since it is larger than the sum of its proper divisors (3957993722735).

8198837406865 is a wasteful number, since it uses less digits than its factorization.

8198837406865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192687 (or 192673 counting only the distinct ones).

The product of its (nonzero) digits is 557383680, while the sum is 73.

The spelling of 8198837406865 in words is "eight trillion, one hundred ninety-eight billion, eight hundred thirty-seven million, four hundred six thousand, eight hundred sixty-five".