68197634121 has 32 divisors (see below), whose sum is σ = 96345446400. Its totient is φ = 42822895104.

The previous prime is 68197634083. The next prime is 68197634161. The reversal of 68197634121 is 12143679186.

It is not a de Polignac number, because 68197634121 - 2¹³ = 68197625929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68197634161) 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 31 ways as a sum of consecutive naturals, for example, 1306306 + ... + 1357508.

It is an arithmetic number, because the mean of its divisors is an integer number (3010795200).

Almost surely, 2^68197634121 is an apocalyptic number.

It is an amenable number.

68197634121 is a deficient number, since it is larger than the sum of its proper divisors (28147812279).

68197634121 is a wasteful number, since it uses less digits than its factorization.

68197634121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51525.

The product of its digits is 435456, while the sum is 48.

The spelling of 68197634121 in words is "sixty-eight billion, one hundred ninety-seven million, six hundred thirty-four thousand, one hundred twenty-one".