68576311533 has 4 divisors (see below), whose sum is σ = 91435082048. Its totient is φ = 45717541020.

The previous prime is 68576311519. The next prime is 68576311537. The reversal of 68576311533 is 33511367586.

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 not a de Polignac number, because 68576311533 - 2¹⁷ = 68576180461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68576311537) 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, 11429385253 + ... + 11429385258.

It is an arithmetic number, because the mean of its divisors is an integer number (22858770512).

Almost surely, 2^68576311533 is an apocalyptic number.

It is an amenable number.

68576311533 is a deficient number, since it is larger than the sum of its proper divisors (22858770515).

68576311533 is a wasteful number, since it uses less digits than its factorization.

68576311533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22858770514.

The product of its digits is 1360800, while the sum is 48.

The spelling of 68576311533 in words is "sixty-eight billion, five hundred seventy-six million, three hundred eleven thousand, five hundred thirty-three".