634342140036 has 144 divisors (see below), whose sum is σ = 1779387320256. Its totient is φ = 188917920000.

The previous prime is 634342139971. The next prime is 634342140053. The reversal of 634342140036 is 630041243436.

634342140036 is a `hidden beast` number, since 6 + 3 + 434 + 214 + 0 + 0 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31175226 + ... + 31195566.

Almost surely, 2^634342140036 is an apocalyptic number.

634342140036 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 634342140036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (889693660128).

634342140036 is an abundant number, since it is smaller than the sum of its proper divisors (1145045180220).

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

634342140036 is a wasteful number, since it uses less digits than its factorization.

634342140036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21714 (or 21709 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

The spelling of 634342140036 in words is "six hundred thirty-four billion, three hundred forty-two million, one hundred forty thousand, thirty-six".