68469879329 has 4 divisors (see below), whose sum is σ = 68471472384. Its totient is φ = 68468286276.

The previous prime is 68469879301. The next prime is 68469879341. The reversal of 68469879329 is 92397896486.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68469879329 - 2⁸ = 68469879073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68469879349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730217 + ... + 818630.

It is an arithmetic number, because the mean of its divisors is an integer number (17117868096).

Almost surely, 2^68469879329 is an apocalyptic number.

It is an amenable number.

68469879329 is a deficient number, since it is larger than the sum of its proper divisors (1593055).

68469879329 is a wasteful number, since it uses less digits than its factorization.

68469879329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593054.

The product of its digits is 282175488, while the sum is 71.

The spelling of 68469879329 in words is "sixty-eight billion, four hundred sixty-nine million, eight hundred seventy-nine thousand, three hundred twenty-nine".