68945105476 has 27 divisors (see below), whose sum is σ = 130661873181. Its totient is φ = 31817667024.

The previous prime is 68945105419. The next prime is 68945105479. The reversal of 68945105476 is 67450154986.

The square root of 68945105476 is 262574.

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., 10198980100 + 58746125376 = 100990^2 + 242376^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68945105479) 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, 6821875 + ... + 6831973.

Almost surely, 2^68945105476 is an apocalyptic number.

68945105476 is the 262574-th square number.

It is an amenable number.

68945105476 is a deficient number, since it is larger than the sum of its proper divisors (61716767705).

68945105476 is an equidigital number, since it uses as much as digits as its factorization.

68945105476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20228 (or 10114 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 55.

It can be divided in two parts, 6894510 and 5476, that added together give a palindrome (6899986).

The spelling of 68945105476 in words is "sixty-eight billion, nine hundred forty-five million, one hundred five thousand, four hundred seventy-six".