68161892561852 has 12 divisors (see below), whose sum is σ = 119747449385760. Its totient is φ = 33948335594496.

The previous prime is 68161892561827. The next prime is 68161892561879. The reversal of 68161892561852 is 25816529816186.

It is a super-2 number, since 2×68161892561852² (a number of 28 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (68) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33152670452 + ... + 33152672507.

It is an arithmetic number, because the mean of its divisors is an integer number (9978954115480).

Almost surely, 2^{68161892561852} is an apocalyptic number.

It is an amenable number.

68161892561852 is a deficient number, since it is larger than the sum of its proper divisors (51585556823908).

68161892561852 is a wasteful number, since it uses less digits than its factorization.

68161892561852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66305343220 (or 66305343218 counting only the distinct ones).

The product of its digits is 99532800, while the sum is 68.

The spelling of 68161892561852 in words is "sixty-eight trillion, one hundred sixty-one billion, eight hundred ninety-two million, five hundred sixty-one thousand, eight hundred fifty-two".