634871524381 has 8 divisors (see below), whose sum is σ = 643771839744. Its totient is φ = 625976707680.

The previous prime is 634871524363. The next prime is 634871524433. The reversal of 634871524381 is 183425178436.

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 634871524381 - 2¹³ = 634871516189 is a prime.

It is a super-2 number, since 2×634871524381² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634871524351) 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 7 ways as a sum of consecutive naturals, for example, 1141855 + ... + 1604236.

It is an arithmetic number, because the mean of its divisors is an integer number (80471479968).

Almost surely, 2^634871524381 is an apocalyptic number.

It is an amenable number.

634871524381 is a deficient number, since it is larger than the sum of its proper divisors (8900315363).

634871524381 is a wasteful number, since it uses less digits than its factorization.

634871524381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749331.

The product of its digits is 3870720, while the sum is 52.

The spelling of 634871524381 in words is "six hundred thirty-four billion, eight hundred seventy-one million, five hundred twenty-four thousand, three hundred eighty-one".