68164368385 has 8 divisors (see below), whose sum is σ = 81817468200. Its totient is φ = 54518010624.

The previous prime is 68164368373. The next prime is 68164368401. The reversal of 68164368385 is 58386346186.

It can be written as a sum of positive squares in 4 ways, for example, as 861481201 + 67302887184 = 29351^2 + 259428^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68164368385 - 2⁵ = 68164368353 is a prime.

It is a super-2 number, since 2×68164368385² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1663242 + ... + 1703731.

It is an arithmetic number, because the mean of its divisors is an integer number (10227183525).

Almost surely, 2^68164368385 is an apocalyptic number.

It is an amenable number.

68164368385 is a deficient number, since it is larger than the sum of its proper divisors (13653099815).

68164368385 is a wasteful number, since it uses less digits than its factorization.

68164368385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371027.

The product of its digits is 19906560, while the sum is 58.

The spelling of 68164368385 in words is "sixty-eight billion, one hundred sixty-four million, three hundred sixty-eight thousand, three hundred eighty-five".