8921875937587 has 2 divisors, whose sum is σ = 8921875937588. Its totient is φ = 8921875937586.

The previous prime is 8921875937551. The next prime is 8921875937593. The reversal of 8921875937587 is 7857395781298.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8921875937587 is a prime.

It is not a weakly prime, because it can be changed into another prime (8921875937537) by changing a digit.

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 as a sum of consecutive naturals, namely, 4460937968793 + 4460937968794.

It is an arithmetic number, because the mean of its divisors is an integer number (4460937968794).

Almost surely, 2^{8921875937587} is an apocalyptic number.

8921875937587 is a deficient number, since it is larger than the sum of its proper divisors (1).

8921875937587 is an equidigital number, since it uses as much as digits as its factorization.

8921875937587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2133734400, while the sum is 79.

The spelling of 8921875937587 in words is "eight trillion, nine hundred twenty-one billion, eight hundred seventy-five million, nine hundred thirty-seven thousand, five hundred eighty-seven".