68546140325 has 12 divisors (see below), whose sum is σ = 91535461668. Its totient is φ = 50618688000.

The previous prime is 68546140297. The next prime is 68546140339. The reversal of 68546140325 is 52304164586.

It can be written as a sum of positive squares in 6 ways, for example, as 1275418369 + 67270721956 = 35713^2 + 259366^2 .

It is not a de Polignac number, because 68546140325 - 2¹⁰ = 68546139301 is a prime.

It is a super-2 number, since 2×68546140325² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105455276 + ... + 105455925.

It is an arithmetic number, because the mean of its divisors is an integer number (7627955139).

Almost surely, 2^68546140325 is an apocalyptic number.

68546140325 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68546140325 is a deficient number, since it is larger than the sum of its proper divisors (22989321343).

68546140325 is a wasteful number, since it uses less digits than its factorization.

68546140325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210911224 (or 210911219 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 68546140325 in words is "sixty-eight billion, five hundred forty-six million, one hundred forty thousand, three hundred twenty-five".