634153637789 has 16 divisors (see below), whose sum is σ = 732018487680. Its totient is φ = 538108065600.

The previous prime is 634153637779. The next prime is 634153637801. The reversal of 634153637789 is 987736351436.

It is a de Polignac number, because none of the positive numbers 2^k-634153637789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634153637779) 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, 5756267 + ... + 5865399.

It is an arithmetic number, because the mean of its divisors is an integer number (45751155480).

Almost surely, 2^634153637789 is an apocalyptic number.

It is an amenable number.

634153637789 is a deficient number, since it is larger than the sum of its proper divisors (97864849891).

634153637789 is a wasteful number, since it uses less digits than its factorization.

634153637789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117460.

The product of its digits is 68584320, while the sum is 62.

The spelling of 634153637789 in words is "six hundred thirty-four billion, one hundred fifty-three million, six hundred thirty-seven thousand, seven hundred eighty-nine".