68947677552 has 160 divisors (see below), whose sum is σ = 196795904256. Its totient is φ = 20665497600.

The previous prime is 68947677551. The next prime is 68947677569. The reversal of 68947677552 is 25577674986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68947677551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20746963 + ... + 20750285.

Almost surely, 2^68947677552 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 68947677552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98397952128).

68947677552 is an abundant number, since it is smaller than the sum of its proper divisors (127848226704).

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

68947677552 is a wasteful number, since it uses less digits than its factorization.

68947677552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4199 (or 4193 counting only the distinct ones).

The product of its digits is 177811200, while the sum is 66.

The spelling of 68947677552 in words is "sixty-eight billion, nine hundred forty-seven million, six hundred seventy-seven thousand, five hundred fifty-two".