634030342089 has 4 divisors (see below), whose sum is σ = 845373789456. Its totient is φ = 422686894724.

The previous prime is 634030342081. The next prime is 634030342093. The reversal of 634030342089 is 980243030436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 634030342089 - 2³ = 634030342081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 634030342089.

It is not an unprimeable number, because it can be changed into a prime (634030342081) 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, 105671723679 + ... + 105671723684.

It is an arithmetic number, because the mean of its divisors is an integer number (211343447364).

Almost surely, 2^634030342089 is an apocalyptic number.

It is an amenable number.

634030342089 is a deficient number, since it is larger than the sum of its proper divisors (211343447367).

634030342089 is a wasteful number, since it uses less digits than its factorization.

634030342089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211343447366.

The product of its (nonzero) digits is 373248, while the sum is 42.

The spelling of 634030342089 in words is "six hundred thirty-four billion, thirty million, three hundred forty-two thousand, eighty-nine".