634545545436 has 192 divisors, whose sum is σ = 1821904627200. Its totient is φ = 189376704000.

The previous prime is 634545545393. The next prime is 634545545443.

634545545436 is a `hidden beast` number, since 6 + 3 + 4 + 5 + 4 + 554 + 54 + 36 = 666.

634545545436 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 64084086 + ... + 64093986.

It is an arithmetic number, because the mean of its divisors is an integer number (9489086600).

Almost surely, 2^634545545436 is an apocalyptic number.

634545545436 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 634545545436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (910952313600).

634545545436 is an abundant number, since it is smaller than the sum of its proper divisors (1187359081764).

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

634545545436 is a wasteful number, since it uses less digits than its factorization.

634545545436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10737 (or 10729 counting only the distinct ones).

The product of its digits is 51840000, while the sum is 54.

The spelling of 634545545436 in words is "six hundred thirty-four billion, five hundred forty-five million, five hundred forty-five thousand, four hundred thirty-six".