68707730064 has 20 divisors (see below), whose sum is σ = 177494969456. Its totient is φ = 22902576672.

The previous prime is 68707730051. The next prime is 68707730083. The reversal of 68707730064 is 46003770786.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1431411043 = 68707730064 / (6 + 8 + 7 + 0 + 7 + 7 + 3 + 0 + 0 + 6 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 68707729995 and 68707730022.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 715705474 + ... + 715705569.

Almost surely, 2^68707730064 is an apocalyptic number.

It is an amenable number.

68707730064 is an abundant number, since it is smaller than the sum of its proper divisors (108787239392).

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

68707730064 is a wasteful number, since it uses less digits than its factorization.

68707730064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431411054 (or 1431411048 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 48.

The spelling of 68707730064 in words is "sixty-eight billion, seven hundred seven million, seven hundred thirty thousand, sixty-four".