634242535787 has 8 divisors (see below), whose sum is σ = 724856519136. Its totient is φ = 543630529152.

The previous prime is 634242535763. The next prime is 634242535819. The reversal of 634242535787 is 787535242436.

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 634242535787 - 2³⁰ = 633168793963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634242535727) 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, 272723 + ... + 1158819.

It is an arithmetic number, because the mean of its divisors is an integer number (90607064892).

Almost surely, 2^634242535787 is an apocalyptic number.

634242535787 is a deficient number, since it is larger than the sum of its proper divisors (90613983349).

634242535787 is a wasteful number, since it uses less digits than its factorization.

634242535787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988357.

The product of its digits is 33868800, while the sum is 56.

The spelling of 634242535787 in words is "six hundred thirty-four billion, two hundred forty-two million, five hundred thirty-five thousand, seven hundred eighty-seven".