68616878760 has 80 divisors (see below), whose sum is σ = 230628964500. Its totient is φ = 18297833472.

The previous prime is 68616878747. The next prime is 68616878807. The reversal of 68616878760 is 6787861686.

68616878760 is a `hidden beast` number, since 6 + 8 + 616 + 8 + 7 + 8 + 7 + 6 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 63114503076 + 5502375684 = 251226^2 + 74178^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10585785 + ... + 10592264.

Almost surely, 2^68616878760 is an apocalyptic number.

68616878760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68616878760 is an abundant number, since it is smaller than the sum of its proper divisors (162012085740).

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

68616878760 is a wasteful number, since it uses less digits than its factorization.

68616878760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21178072 (or 21178059 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 63.

It can be divided in two parts, 68616 and 878760, that added together give a triangular number (947376 = T₁₃₇₆).

The spelling of 68616878760 in words is "sixty-eight billion, six hundred sixteen million, eight hundred seventy-eight thousand, seven hundred sixty".