84643208631317 has 32 divisors (see below), whose sum is σ = 99583408108800. Its totient is φ = 70443611117568.

The previous prime is 84643208631313. The next prime is 84643208631347. The reversal of 84643208631317 is 71313680234648.

It is a cyclic number.

It is not a de Polignac number, because 84643208631317 - 2² = 84643208631313 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84643208631313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 562005659 + ... + 562156247.

It is an arithmetic number, because the mean of its divisors is an integer number (3111981503400).

Almost surely, 2^{84643208631317} is an apocalyptic number.

It is an amenable number.

84643208631317 is a deficient number, since it is larger than the sum of its proper divisors (14940199477483).

84643208631317 is a wasteful number, since it uses less digits than its factorization.

84643208631317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166365.

The product of its (nonzero) digits is 13934592, while the sum is 56.

The spelling of 84643208631317 in words is "eighty-four trillion, six hundred forty-three billion, two hundred eight million, six hundred thirty-one thousand, three hundred seventeen".