63806847217 has 8 divisors (see below), whose sum is σ = 63922590720. Its totient is φ = 63691205760.

The previous prime is 63806847197. The next prime is 63806847239. The reversal of 63806847217 is 71274860836.

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 63806847217 - 2¹¹ = 63806845169 is a prime.

It is a super-3 number, since 3×63806847217³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63806842217) 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, 1286593 + ... + 1335265.

It is an arithmetic number, because the mean of its divisors is an integer number (7990323840).

Almost surely, 2^63806847217 is an apocalyptic number.

It is an amenable number.

63806847217 is a deficient number, since it is larger than the sum of its proper divisors (115743503).

63806847217 is a wasteful number, since it uses less digits than its factorization.

63806847217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51023.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 63806847217 in words is "sixty-three billion, eight hundred six million, eight hundred forty-seven thousand, two hundred seventeen".