6398866760831 has 8 divisors (see below), whose sum is σ = 6892467984384. Its totient is φ = 5923214672760.

The previous prime is 6398866760809. The next prime is 6398866760873. The reversal of 6398866760831 is 1380676688936.

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 6398866760831 - 2³⁸ = 6123988853887 is a prime.

It is a super-2 number, since 2×6398866760831² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6388866760831) 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, 4487283131 + ... + 4487284556.

It is an arithmetic number, because the mean of its divisors is an integer number (861558498048).

Almost surely, 2^{6398866760831} is an apocalyptic number.

6398866760831 is a deficient number, since it is larger than the sum of its proper divisors (493601223553).

6398866760831 is a wasteful number, since it uses less digits than its factorization.

6398866760831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8974567741.

The product of its (nonzero) digits is 376233984, while the sum is 71.

The spelling of 6398866760831 in words is "six trillion, three hundred ninety-eight billion, eight hundred sixty-six million, seven hundred sixty thousand, eight hundred thirty-one".