68575381289 has 4 divisors (see below), whose sum is σ = 68575906560. Its totient is φ = 68574856020.

The previous prime is 68575381249. The next prime is 68575381327. The reversal of 68575381289 is 98218357586.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68575381289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68575381249) 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, 101252 + ... + 383930.

It is an arithmetic number, because the mean of its divisors is an integer number (17143976640).

Almost surely, 2^68575381289 is an apocalyptic number.

It is an amenable number.

68575381289 is a deficient number, since it is larger than the sum of its proper divisors (525271).

68575381289 is a wasteful number, since it uses less digits than its factorization.

68575381289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525270.

The product of its digits is 29030400, while the sum is 62.

The spelling of 68575381289 in words is "sixty-eight billion, five hundred seventy-five million, three hundred eighty-one thousand, two hundred eighty-nine".