63613804161869 has 8 divisors (see below), whose sum is σ = 68516640053400. Its totient is φ = 58712320604736.

The previous prime is 63613804161863. The next prime is 63613804161889. The reversal of 63613804161869 is 96816140831636.

It can be written as a sum of positive squares in 4 ways, for example, as 12520543479844 + 51093260682025 = 3538438^2 + 7147955^2 .

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 63613804161869 - 2⁸ = 63613804161613 is a prime.

It is a super-3 number, since 3×63613804161869³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63613804161863) 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, 337985894 + ... + 338174055.

It is an arithmetic number, because the mean of its divisors is an integer number (8564580006675).

Almost surely, 2^{63613804161869} is an apocalyptic number.

It is an amenable number.

63613804161869 is a deficient number, since it is larger than the sum of its proper divisors (4902835891531).

63613804161869 is a wasteful number, since it uses less digits than its factorization.

63613804161869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676167199.

The product of its (nonzero) digits is 26873856, while the sum is 62.

The spelling of 63613804161869 in words is "sixty-three trillion, six hundred thirteen billion, eight hundred four million, one hundred sixty-one thousand, eight hundred sixty-nine".