68493496617939 has 4 divisors (see below), whose sum is σ = 91324662157256. Its totient is φ = 45662331078624.

The previous prime is 68493496617907. The next prime is 68493496617941. The reversal of 68493496617939 is 93971669439486.

68493496617939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 68493496617939 - 2⁵ = 68493496617907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68493496617839) 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 3 ways as a sum of consecutive naturals, for example, 11415582769654 + ... + 11415582769659.

It is an arithmetic number, because the mean of its divisors is an integer number (22831165539314).

Almost surely, 2^{68493496617939} is an apocalyptic number.

68493496617939 is a deficient number, since it is larger than the sum of its proper divisors (22831165539317).

68493496617939 is a wasteful number, since it uses less digits than its factorization.

68493496617939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22831165539316.

The product of its digits is 11428107264, while the sum is 84.

The spelling of 68493496617939 in words is "sixty-eight trillion, four hundred ninety-three billion, four hundred ninety-six million, six hundred seventeen thousand, nine hundred thirty-nine".