68687148993 has 16 divisors (see below), whose sum is σ = 97009577280. Its totient is φ = 43080270336.

The previous prime is 68687148967. The next prime is 68687149051. The reversal of 68687148993 is 39984178686.

It is not a de Polignac number, because 68687148993 - 2⁵ = 68687148961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68687148493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147148 + ... + 398781.

It is an arithmetic number, because the mean of its divisors is an integer number (6063098580).

Almost surely, 2^68687148993 is an apocalyptic number.

It is an amenable number.

68687148993 is a deficient number, since it is larger than the sum of its proper divisors (28322428287).

68687148993 is a wasteful number, since it uses less digits than its factorization.

68687148993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548416.

The product of its digits is 125411328, while the sum is 69.

The spelling of 68687148993 in words is "sixty-eight billion, six hundred eighty-seven million, one hundred forty-eight thousand, nine hundred ninety-three".