634333661542 has 8 divisors (see below), whose sum is σ = 1087429134096. Its totient is φ = 271857283512.

The previous prime is 634333661519. The next prime is 634333661543. The reversal of 634333661542 is 245166333436.

634333661542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 634333661492 and 634333661501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634333661543) 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, 22654773613 + ... + 22654773640.

It is an arithmetic number, because the mean of its divisors is an integer number (135928641762).

Almost surely, 2^634333661542 is an apocalyptic number.

634333661542 is a deficient number, since it is larger than the sum of its proper divisors (453095472554).

634333661542 is a wasteful number, since it uses less digits than its factorization.

634333661542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45309547262.

The product of its digits is 2799360, while the sum is 46.

Adding to 634333661542 its reverse (245166333436), we get a palindrome (879499994978).

The spelling of 634333661542 in words is "six hundred thirty-four billion, three hundred thirty-three million, six hundred sixty-one thousand, five hundred forty-two".