68209247232 has 440 divisors, whose sum is σ = 240870653760. Its totient is φ = 18811699200.

The previous prime is 68209247231. The next prime is 68209247263. The reversal of 68209247232 is 23274290286.

68209247232 is a `hidden beast` number, since 68 + 2 + 0 + 92 + 472 + 32 = 666.

It is not an unprimeable number, because it can be changed into a prime (68209247231) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16835607 + ... + 16839657.

It is an arithmetic number, because the mean of its divisors is an integer number (547433304).

Almost surely, 2^68209247232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68209247232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120435326880).

68209247232 is an abundant number, since it is smaller than the sum of its proper divisors (172661406528).

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

68209247232 is a wasteful number, since it uses less digits than its factorization.

68209247232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4119 (or 4092 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 68209247232 in words is "sixty-eight billion, two hundred nine million, two hundred forty-seven thousand, two hundred thirty-two".