68353469185 has 48 divisors (see below), whose sum is σ = 89450578800. Its totient is φ = 49967677440.

The previous prime is 68353469179. The next prime is 68353469213. The reversal of 68353469185 is 58196435386.

It can be written as a sum of positive squares in 24 ways, for example, as 34887889089 + 33465580096 = 186783^2 + 182936^2 .

It is not a de Polignac number, because 68353469185 - 2⁵ = 68353469153 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32719621 + ... + 32721709.

It is an arithmetic number, because the mean of its divisors is an integer number (1863553725).

Almost surely, 2^68353469185 is an apocalyptic number.

It is an amenable number.

68353469185 is a deficient number, since it is larger than the sum of its proper divisors (21097109615).

68353469185 is a wasteful number, since it uses less digits than its factorization.

68353469185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422 (or 2381 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 58.

The spelling of 68353469185 in words is "sixty-eight billion, three hundred fifty-three million, four hundred sixty-nine thousand, one hundred eighty-five".