7845623512345 has 16 divisors (see below), whose sum is σ = 9740762154000. Its totient is φ = 6059216959488.

The previous prime is 7845623512261. The next prime is 7845623512399. The reversal of 7845623512345 is 5432153265487.

It can be written as a sum of positive squares in 8 ways, for example, as 453860416 + 7845169651929 = 21304^2 + 2800923^2 .

It is a cyclic number.

It is not a de Polignac number, because 7845623512345 - 2⁷ = 7845623512217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2761200 + ... + 4828609.

It is an arithmetic number, because the mean of its divisors is an integer number (608797634625).

Almost surely, 2^{7845623512345} is an apocalyptic number.

It is an amenable number.

7845623512345 is a deficient number, since it is larger than the sum of its proper divisors (1895138641655).

7845623512345 is a wasteful number, since it uses less digits than its factorization.

7845623512345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7596972.

The product of its digits is 24192000, while the sum is 55.

The spelling of 7845623512345 in words is "seven trillion, eight hundred forty-five billion, six hundred twenty-three million, five hundred twelve thousand, three hundred forty-five".