68649973360 has 20 divisors (see below), whose sum is σ = 159611188248. Its totient is φ = 27459989312.

The previous prime is 68649973351. The next prime is 68649973397. The reversal of 68649973360 is 6337994686.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429062254 + ... + 429062413.

Almost surely, 2^68649973360 is an apocalyptic number.

It is an amenable number.

68649973360 is an abundant number, since it is smaller than the sum of its proper divisors (90961214888).

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

68649973360 is a wasteful number, since it uses less digits than its factorization.

68649973360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858124680 (or 858124674 counting only the distinct ones).

The product of its (nonzero) digits is 35271936, while the sum is 61.

The spelling of 68649973360 in words is "sixty-eight billion, six hundred forty-nine million, nine hundred seventy-three thousand, three hundred sixty".