68549195912 has 12 divisors (see below), whose sum is σ = 128531130855. Its totient is φ = 34274227688.

The previous prime is 68549195899. The next prime is 68549195917. The reversal of 68549195912 is 21959194586.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 34274597956 + 34274597956 = 185134^2 + 185134^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=185134.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68549195917) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 694253 + ... + 786819.

Almost surely, 2^68549195912 is an apocalyptic number.

It is an amenable number.

68549195912 is a deficient number, since it is larger than the sum of its proper divisors (59981934943).

68549195912 is an frugal number, since it uses more digits than its factorization.

68549195912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185140 (or 92569 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 59.

The spelling of 68549195912 in words is "sixty-eight billion, five hundred forty-nine million, one hundred ninety-five thousand, nine hundred twelve".