634525340231320 has 64 divisors (see below), whose sum is σ = 1464763968763200. Its totient is φ = 247236924856320.

The previous prime is 634525340231297. The next prime is 634525340231323. The reversal of 634525340231320 is 23132043525436.

It is a happy number.

It is a super-2 number, since 2×634525340231320² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634525340231323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297938685 + ... + 300060844.

It is an arithmetic number, because the mean of its divisors is an integer number (22886937011925).

Almost surely, 2^{634525340231320} is an apocalyptic number.

It is an amenable number.

634525340231320 is an abundant number, since it is smaller than the sum of its proper divisors (830238628531880).

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

634525340231320 is a wasteful number, since it uses less digits than its factorization.

634525340231320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598000228 (or 598000224 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 43.

Adding to 634525340231320 its reverse (23132043525436), we get a palindrome (657657383756756).

The spelling of 634525340231320 in words is "six hundred thirty-four trillion, five hundred twenty-five billion, three hundred forty million, two hundred thirty-one thousand, three hundred twenty".