68851663190 has 16 divisors (see below), whose sum is σ = 125964683280. Its totient is φ = 27089178720.

The previous prime is 68851663189. The next prime is 68851663259. The reversal of 68851663190 is 9136615886.

It is a super-2 number, since 2×68851663190² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 56435180 + ... + 56436399.

It is an arithmetic number, because the mean of its divisors is an integer number (7872792705).

Almost surely, 2^68851663190 is an apocalyptic number.

68851663190 is a deficient number, since it is larger than the sum of its proper divisors (57113020090).

68851663190 is a wasteful number, since it uses less digits than its factorization.

68851663190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112871647.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 68851663190 in words is "sixty-eight billion, eight hundred fifty-one million, six hundred sixty-three thousand, one hundred ninety".