68963486881 has 9 divisors (see below), whose sum is σ = 70167935473. Its totient is φ = 67779382900.

The previous prime is 68963486873. The next prime is 68963486909. The reversal of 68963486881 is 18868436986.

The square root of 68963486881 is 262609.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 68963486881 - 2³ = 68963486873 is a prime.

It is a super-2 number, since 2×68963486881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68963486381) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15491706 + ... + 15496156.

Almost surely, 2^68963486881 is an apocalyptic number.

68963486881 is the 262609-th square number.

68963486881 is the 131305-th centered octagonal number.

It is an amenable number.

68963486881 is a deficient number, since it is larger than the sum of its proper divisors (1204448592).

68963486881 is an frugal number, since it uses more digits than its factorization.

68963486881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9020 (or 4510 counting only the distinct ones).

The product of its digits is 95551488, while the sum is 67.

The spelling of 68963486881 in words is "sixty-eight billion, nine hundred sixty-three million, four hundred eighty-six thousand, eight hundred eighty-one".