68787816604 has 48 divisors (see below), whose sum is σ = 134161372800. Its totient is φ = 30641458176.

The previous prime is 68787816599. The next prime is 68787816613. The reversal of 68787816604 is 40661878786.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4650829 + ... + 4665595.

It is an arithmetic number, because the mean of its divisors is an integer number (2795028600).

Almost surely, 2^68787816604 is an apocalyptic number.

It is an amenable number.

68787816604 is a deficient number, since it is larger than the sum of its proper divisors (65373556196).

68787816604 is a wasteful number, since it uses less digits than its factorization.

68787816604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17902 (or 17900 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 61.

The spelling of 68787816604 in words is "sixty-eight billion, seven hundred eighty-seven million, eight hundred sixteen thousand, six hundred four".