84628455726445 has 4 divisors (see below), whose sum is σ = 101554146871740. Its totient is φ = 67702764581152.

The previous prime is 84628455726407. The next prime is 84628455726469. The reversal of 84628455726445 is 54462755482648.

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 63912685800681 + 20715769925764 = 7994541^2 + 4551458^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84628455726445 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8462845572640 + ... + 8462845572649.

It is an arithmetic number, because the mean of its divisors is an integer number (25388536717935).

Almost surely, 2^{84628455726445} is an apocalyptic number.

It is an amenable number.

84628455726445 is a deficient number, since it is larger than the sum of its proper divisors (16925691145295).

84628455726445 is a wasteful number, since it uses less digits than its factorization.

84628455726445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16925691145294.

The product of its digits is 2064384000, while the sum is 70.

The spelling of 84628455726445 in words is "eighty-four trillion, six hundred twenty-eight billion, four hundred fifty-five million, seven hundred twenty-six thousand, four hundred forty-five".