636343046671 has 8 divisors (see below), whose sum is σ = 645874246784. Its totient is φ = 626812833240.

The previous prime is 636343046659. The next prime is 636343046683. The reversal of 636343046671 is 176640343636.

It is an interprime number because it is at equal distance from previous prime (636343046659) and next prime (636343046683).

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 636343046671 - 2¹⁷ = 636342915599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636343046611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1108156 + ... + 1581358.

It is an arithmetic number, because the mean of its divisors is an integer number (80734280848).

Almost surely, 2^636343046671 is an apocalyptic number.

636343046671 is a deficient number, since it is larger than the sum of its proper divisors (9531200113).

636343046671 is a wasteful number, since it uses less digits than its factorization.

636343046671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493341.

The product of its (nonzero) digits is 3919104, while the sum is 49.

The spelling of 636343046671 in words is "six hundred thirty-six billion, three hundred forty-three million, forty-six thousand, six hundred seventy-one".