68117612950 has 24 divisors (see below), whose sum is σ = 126849849840. Its totient is φ = 27214552800.

The previous prime is 68117612923. The next prime is 68117612951. The reversal of 68117612950 is 5921671186.

It is a self number, because there is not a number n which added to its sum of digits gives 68117612950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68117612951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 769941 + ... + 853840.

It is an arithmetic number, because the mean of its divisors is an integer number (5285410410).

Almost surely, 2^68117612950 is an apocalyptic number.

68117612950 is a deficient number, since it is larger than the sum of its proper divisors (58732236890).

68117612950 is a wasteful number, since it uses less digits than its factorization.

68117612950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624632 (or 1624627 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 46.

The spelling of 68117612950 in words is "sixty-eight billion, one hundred seventeen million, six hundred twelve thousand, nine hundred fifty".