634245542436 has 96 divisors (see below), whose sum is σ = 1631707330176. Its totient is φ = 190143360000.

The previous prime is 634245542419. The next prime is 634245542461.

634245542436 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17593566 + ... + 17629578.

It is an arithmetic number, because the mean of its divisors is an integer number (16996951356).

Almost surely, 2^634245542436 is an apocalyptic number.

634245542436 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634245542436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (815853665088).

634245542436 is an abundant number, since it is smaller than the sum of its proper divisors (997461787740).

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

634245542436 is a wasteful number, since it uses less digits than its factorization.

634245542436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37453 (or 37451 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 48.

The spelling of 634245542436 in words is "six hundred thirty-four billion, two hundred forty-five million, five hundred forty-two thousand, four hundred thirty-six".