67788688776 has 128 divisors (see below), whose sum is σ = 185738572800. Its totient is φ = 20524400640.

The previous prime is 67788688771. The next prime is 67788688777.

67788688776 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (67788688771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4710520 + ... + 4724888.

It is an arithmetic number, because the mean of its divisors is an integer number (1451082600).

Almost surely, 2^67788688776 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 67788688776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92869286400).

67788688776 is an abundant number, since it is smaller than the sum of its proper divisors (117949884024).

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

67788688776 is a wasteful number, since it uses less digits than its factorization.

67788688776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14799 (or 14795 counting only the distinct ones).

The product of its digits is 2124251136, while the sum is 78.

The spelling of 67788688776 in words is "sixty-seven billion, seven hundred eighty-eight million, six hundred eighty-eight thousand, seven hundred seventy-six".