68965865518 has 16 divisors (see below), whose sum is σ = 112887561600. Its totient is φ = 31338585400.

The previous prime is 68965865513. The next prime is 68965865519. The reversal of 68965865518 is 81556856986.

It is a super-2 number, since 2×68965865518² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68965865513) 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 7 ways as a sum of consecutive naturals, for example, 402538 + ... + 547693.

It is an arithmetic number, because the mean of its divisors is an integer number (7055472600).

Almost surely, 2^68965865518 is an apocalyptic number.

68965865518 is a deficient number, since it is larger than the sum of its proper divisors (43921696082).

68965865518 is a wasteful number, since it uses less digits than its factorization.

68965865518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953543.

The product of its digits is 124416000, while the sum is 67.

The spelling of 68965865518 in words is "sixty-eight billion, nine hundred sixty-five million, eight hundred sixty-five thousand, five hundred eighteen".