636041168677 has 4 divisors (see below), whose sum is σ = 669517019680. Its totient is φ = 602565317676.

The previous prime is 636041168603. The next prime is 636041168723. The reversal of 636041168677 is 776861140636.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 636041168677 - 2⁷ = 636041168549 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 (636041168177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16737925473 + ... + 16737925510.

It is an arithmetic number, because the mean of its divisors is an integer number (167379254920).

Almost surely, 2^636041168677 is an apocalyptic number.

It is an amenable number.

636041168677 is a deficient number, since it is larger than the sum of its proper divisors (33475851003).

636041168677 is a wasteful number, since it uses less digits than its factorization.

636041168677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33475851002.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 636041168677 in words is "six hundred thirty-six billion, forty-one million, one hundred sixty-eight thousand, six hundred seventy-seven".