634219407361 has 4 divisors (see below), whose sum is σ = 634252306500. Its totient is φ = 634186508224.

The previous prime is 634219407359. The next prime is 634219407377. The reversal of 634219407361 is 163704912436.

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

It can be written as a sum of positive squares in 2 ways, for example, as 571771896336 + 62447511025 = 756156^2 + 249895^2 .

It is a cyclic number.

It is not a de Polignac number, because 634219407361 - 2¹ = 634219407359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634219407161) 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, 16420636 + ... + 16459213.

It is an arithmetic number, because the mean of its divisors is an integer number (158563076625).

Almost surely, 2^634219407361 is an apocalyptic number.

It is an amenable number.

634219407361 is a deficient number, since it is larger than the sum of its proper divisors (32899139).

634219407361 is a wasteful number, since it uses less digits than its factorization.

634219407361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32899138.

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 634219407361 in words is "six hundred thirty-four billion, two hundred nineteen million, four hundred seven thousand, three hundred sixty-one".