634506605436 has 48 divisors (see below), whose sum is σ = 1624031031168. Its totient is φ = 191212430400.

The previous prime is 634506605429. The next prime is 634506605437.

634506605436 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634506605437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13254750 + ... + 13302533.

It is an arithmetic number, because the mean of its divisors is an integer number (33833979816).

Almost surely, 2^634506605436 is an apocalyptic number.

634506605436 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

634506605436 is an abundant number, since it is smaller than the sum of its proper divisors (989524425732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634506605436 is a wasteful number, since it uses less digits than its factorization.

634506605436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26557482 (or 26557480 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 48.

The spelling of 634506605436 in words is "six hundred thirty-four billion, five hundred six million, six hundred five thousand, four hundred thirty-six".