68720064949632 has 32 divisors (see below), whose sum is σ = 182537672523480. Its totient is φ = 22906688316416.

The previous prime is 68720064949621. The next prime is 68720064949643. The reversal of 68720064949632 is 23694946002786.

It is an interprime number because it is at equal distance from previous prime (68720064949621) and next prime (68720064949643).

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89479250853 + ... + 89479251620.

Almost surely, 2^{68720064949632} is an apocalyptic number.

It is an amenable number.

68720064949632 is an abundant number, since it is smaller than the sum of its proper divisors (113817607573848).

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

68720064949632 is a wasteful number, since it uses less digits than its factorization.

68720064949632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178958502490 (or 178958502478 counting only the distinct ones).

The product of its (nonzero) digits is 188116992, while the sum is 66.

The spelling of 68720064949632 in words is "sixty-eight trillion, seven hundred twenty billion, sixty-four million, nine hundred forty-nine thousand, six hundred thirty-two".