68534352772 has 24 divisors (see below), whose sum is σ = 127448607384. Its totient is φ = 32135020032.

The previous prime is 68534352737. The next prime is 68534352829. The reversal of 68534352772 is 27725343586.

It can be written as a sum of positive squares in 4 ways, for example, as 9342382336 + 59191970436 = 96656^2 + 243294^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1800403 + ... + 1838074.

It is an arithmetic number, because the mean of its divisors is an integer number (5310358641).

Almost surely, 2^68534352772 is an apocalyptic number.

It is an amenable number.

68534352772 is a deficient number, since it is larger than the sum of its proper divisors (58914254612).

68534352772 is a wasteful number, since it uses less digits than its factorization.

68534352772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3638775 (or 3638773 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 52.

The spelling of 68534352772 in words is "sixty-eight billion, five hundred thirty-four million, three hundred fifty-two thousand, seven hundred seventy-two".