8502721963 has 2 divisors, whose sum is σ = 8502721964. Its totient is φ = 8502721962.

The previous prime is 8502721861. The next prime is 8502722021. The reversal of 8502721963 is 3691272058.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8502721963 is a prime.

It is not a weakly prime, because it can be changed into another prime (8502791963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4251360981 + 4251360982.

It is an arithmetic number, because the mean of its divisors is an integer number (4251360982).

Almost surely, 2^8502721963 is an apocalyptic number.

8502721963 is a deficient number, since it is larger than the sum of its proper divisors (1).

8502721963 is an equidigital number, since it uses as much as digits as its factorization.

8502721963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 8502721963 is about 92210.2053083063. The cubic root of 8502721963 is about 2041.0453730850.

The spelling of 8502721963 in words is "eight billion, five hundred two million, seven hundred twenty-one thousand, nine hundred sixty-three".