8421485623 has 2 divisors, whose sum is σ = 8421485624. Its totient is φ = 8421485622.

The previous prime is 8421485587. The next prime is 8421485659. The reversal of 8421485623 is 3265841248.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (8421485587) and next prime (8421485659).

It is a cyclic number.

It is not a de Polignac number, because 8421485623 - 2¹⁷ = 8421354551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8421485623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8421485123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4210742811 + 4210742812.

It is an arithmetic number, because the mean of its divisors is an integer number (4210742812).

Almost surely, 2^8421485623 is an apocalyptic number.

8421485623 is a deficient number, since it is larger than the sum of its proper divisors (1).

8421485623 is an equidigital number, since it uses as much as digits as its factorization.

8421485623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 368640, while the sum is 43.

The square root of 8421485623 is about 91768.6527252089. The cubic root of 8421485623 is about 2034.5244053967.

The spelling of 8421485623 in words is "eight billion, four hundred twenty-one million, four hundred eighty-five thousand, six hundred twenty-three".