634368509363 has 4 divisors (see below), whose sum is σ = 635042653248. Its totient is φ = 633694365480.

The previous prime is 634368509303. The next prime is 634368509447. The reversal of 634368509363 is 363905863436.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 634368509363 - 2⁸ = 634368509107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 634368509299 and 634368509308.

It is not an unprimeable number, because it can be changed into a prime (634368509303) 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, 337070531 + ... + 337072412.

It is an arithmetic number, because the mean of its divisors is an integer number (158760663312).

Almost surely, 2^634368509363 is an apocalyptic number.

634368509363 is a deficient number, since it is larger than the sum of its proper divisors (674143885).

634368509363 is an equidigital number, since it uses as much as digits as its factorization.

634368509363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674143884.

The product of its (nonzero) digits is 25194240, while the sum is 56.

The spelling of 634368509363 in words is "six hundred thirty-four billion, three hundred sixty-eight million, five hundred nine thousand, three hundred sixty-three".