68843992483984 has 45 divisors (see below), whose sum is σ = 134199536386521. Its totient is φ = 34213121824320.

The previous prime is 68843992483963. The next prime is 68843992483993. The reversal of 68843992483984 is 48938429934886.

The square root of 68843992483984 is 8297228.

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

It can be written as a sum of positive squares in only one way, i.e., 66644822122384 + 2199170361600 = 8163628^2 + 1482960^2 .

It is a super-2 number, since 2×68843992483984² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5542542094 + ... + 5542554514.

Almost surely, 2^{68843992483984} is an apocalyptic number.

68843992483984 is the 8297228-th square number.

It is an amenable number.

68843992483984 is a deficient number, since it is larger than the sum of its proper divisors (65355543902537).

68843992483984 is an frugal number, since it uses more digits than its factorization.

68843992483984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25184 (or 12590 counting only the distinct ones).

The product of its digits is 20639121408, while the sum is 85.

The spelling of 68843992483984 in words is "sixty-eight trillion, eight hundred forty-three billion, nine hundred ninety-two million, four hundred eighty-three thousand, nine hundred eighty-four".