634067681133 has 8 divisors (see below), whose sum is σ = 853794105696. Its totient is φ = 418526522000.

The previous prime is 634067681029. The next prime is 634067681179. The reversal of 634067681133 is 331186760436.

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 634067681133 - 2²¹ = 634065583981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634067680133) 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, 1046316003 + ... + 1046316608.

It is an arithmetic number, because the mean of its divisors is an integer number (106724263212).

Almost surely, 2^634067681133 is an apocalyptic number.

It is an amenable number.

634067681133 is a deficient number, since it is larger than the sum of its proper divisors (219726424563).

634067681133 is a wasteful number, since it uses less digits than its factorization.

634067681133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092632715.

The product of its (nonzero) digits is 1306368, while the sum is 48.

The spelling of 634067681133 in words is "six hundred thirty-four billion, sixty-seven million, six hundred eighty-one thousand, one hundred thirty-three".