634342504226436 has 144 divisors (see below), whose sum is σ = 1663960344096960. Its totient is φ = 203517430744320.

The previous prime is 634342504226377. The next prime is 634342504226437. The reversal of 634342504226436 is 634622405243436.

It is a happy number.

634342504226436 is a `hidden beast` number, since 6 + 3 + 4 + 3 + 42 + 504 + 2 + 2 + 64 + 36 = 666.

It is a super-2 number, since 2×634342504226436² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (634342504226437) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3363280111 + ... + 3363468713.

It is an arithmetic number, because the mean of its divisors is an integer number (11555280167340).

Almost surely, 2^{634342504226436} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634342504226436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (831980172048480).

634342504226436 is an abundant number, since it is smaller than the sum of its proper divisors (1029617839870524).

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

634342504226436 is a wasteful number, since it uses less digits than its factorization.

634342504226436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198706 (or 198701 counting only the distinct ones).

The product of its (nonzero) digits is 59719680, while the sum is 54.

The spelling of 634342504226436 in words is "six hundred thirty-four trillion, three hundred forty-two billion, five hundred four million, two hundred twenty-six thousand, four hundred thirty-six".