68949438616 has 32 divisors (see below), whose sum is σ = 130949913600. Its totient is φ = 34029684000.

The previous prime is 68949438589. The next prime is 68949438619. The reversal of 68949438616 is 61683494986.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68949438619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2991151 + ... + 3014113.

It is an arithmetic number, because the mean of its divisors is an integer number (4092184800).

Almost surely, 2^68949438616 is an apocalyptic number.

It is an amenable number.

68949438616 is a deficient number, since it is larger than the sum of its proper divisors (62000474984).

68949438616 is a wasteful number, since it uses less digits than its factorization.

68949438616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27799 (or 27795 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 64.

The spelling of 68949438616 in words is "sixty-eight billion, nine hundred forty-nine million, four hundred thirty-eight thousand, six hundred sixteen".