68225065145 has 4 divisors (see below), whose sum is σ = 81870078180. Its totient is φ = 54580052112.

The previous prime is 68225065133. The next prime is 68225065187. The reversal of 68225065145 is 54156052286.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26045763769 + 42179301376 = 161387^2 + 205376^2 .

It is a cyclic number.

It is not a de Polignac number, because 68225065145 - 2¹² = 68225061049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68225065096 and 68225065105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6822506510 + ... + 6822506519.

It is an arithmetic number, because the mean of its divisors is an integer number (20467519545).

Almost surely, 2^68225065145 is an apocalyptic number.

It is an amenable number.

68225065145 is a deficient number, since it is larger than the sum of its proper divisors (13645013035).

68225065145 is a wasteful number, since it uses less digits than its factorization.

68225065145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13645013034.

The product of its (nonzero) digits is 576000, while the sum is 44.

The spelling of 68225065145 in words is "sixty-eight billion, two hundred twenty-five million, sixty-five thousand, one hundred forty-five".