68135755352 has 32 divisors (see below), whose sum is σ = 150715038720. Its totient is φ = 28259068320.

The previous prime is 68135755343. The next prime is 68135755409. The reversal of 68135755352 is 25355753186.

It is a self number, because there is not a number n which added to its sum of digits gives 68135755352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19622618 + ... + 19626089.

It is an arithmetic number, because the mean of its divisors is an integer number (4709844960).

Almost surely, 2^68135755352 is an apocalyptic number.

68135755352 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

68135755352 is an abundant number, since it is smaller than the sum of its proper divisors (82579283368).

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

68135755352 is a wasteful number, since it uses less digits than its factorization.

68135755352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39248751 (or 39248747 counting only the distinct ones).

The product of its digits is 3780000, while the sum is 50.

The spelling of 68135755352 in words is "sixty-eight billion, one hundred thirty-five million, seven hundred fifty-five thousand, three hundred fifty-two".