68442899272 has 32 divisors (see below), whose sum is σ = 140125121280. Its totient is φ = 31081901760.

The previous prime is 68442899269. The next prime is 68442899303. The reversal of 68442899272 is 27299824486.

It is a self number, because there is not a number n which added to its sum of digits gives 68442899272.

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, 259608 + ... + 451975.

It is an arithmetic number, because the mean of its divisors is an integer number (4378910040).

Almost surely, 2^68442899272 is an apocalyptic number.

It is an amenable number.

68442899272 is an abundant number, since it is smaller than the sum of its proper divisors (71682222008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68442899272 is a wasteful number, since it uses less digits than its factorization.

68442899272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712693 (or 712689 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 61.

The spelling of 68442899272 in words is "sixty-eight billion, four hundred forty-two million, eight hundred ninety-nine thousand, two hundred seventy-two".