636345057340 has 24 divisors (see below), whose sum is σ = 1354630440240. Its totient is φ = 251051200128.

The previous prime is 636345057287. The next prime is 636345057343. The reversal of 636345057340 is 43750543636.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636345057343) 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, 217924930 + ... + 217927849.

It is an arithmetic number, because the mean of its divisors is an integer number (56442935010).

Almost surely, 2^636345057340 is an apocalyptic number.

It is an amenable number.

636345057340 is an abundant number, since it is smaller than the sum of its proper divisors (718285382900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

636345057340 is a wasteful number, since it uses less digits than its factorization.

636345057340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435852861 (or 435852859 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 46.

The spelling of 636345057340 in words is "six hundred thirty-six billion, three hundred forty-five million, fifty-seven thousand, three hundred forty".