68337989497 has 16 divisors (see below), whose sum is σ = 69281593920. Its totient is φ = 67401198592.

The previous prime is 68337989479. The next prime is 68337989501. The reversal of 68337989497 is 79498973386.

It is not a de Polignac number, because 68337989497 - 2³⁵ = 33978251129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68337989407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23250654 + ... + 23253592.

It is an arithmetic number, because the mean of its divisors is an integer number (4330099620).

Almost surely, 2^68337989497 is an apocalyptic number.

It is an amenable number.

68337989497 is a deficient number, since it is larger than the sum of its proper divisors (943604423).

68337989497 is a wasteful number, since it uses less digits than its factorization.

68337989497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3992.

The product of its digits is 493807104, while the sum is 73.

The spelling of 68337989497 in words is "sixty-eight billion, three hundred thirty-seven million, nine hundred eighty-nine thousand, four hundred ninety-seven".