68575633657585 has 16 divisors (see below), whose sum is σ = 86741002857600. Its totient is φ = 51901621934976.

The previous prime is 68575633657571. The next prime is 68575633657711. The reversal of 68575633657585 is 58575633657586.

It is a cyclic number.

It is not a de Polignac number, because 68575633657585 - 2²¹ = 68575631560433 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 496388140 + ... + 496526269.

It is an arithmetic number, because the mean of its divisors is an integer number (5421312678600).

Almost surely, 2^{68575633657585} is an apocalyptic number.

It is an amenable number.

68575633657585 is a deficient number, since it is larger than the sum of its proper divisors (18165369200015).

68575633657585 is a wasteful number, since it uses less digits than its factorization.

68575633657585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992915160.

The product of its digits is 19051200000, while the sum is 79.

Subtracting from 68575633657585 its reverse (58575633657586), we obtain a palindrome (9999999999999).

The spelling of 68575633657585 in words is "sixty-eight trillion, five hundred seventy-five billion, six hundred thirty-three million, six hundred fifty-seven thousand, five hundred eighty-five".