84687040628887 has 2 divisors, whose sum is σ = 84687040628888. Its totient is φ = 84687040628886.

The previous prime is 84687040628857. The next prime is 84687040628909. The reversal of 84687040628887 is 78882604078648.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84687040628887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84687040628837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42343520314443 + 42343520314444.

It is an arithmetic number, because the mean of its divisors is an integer number (42343520314444).

Almost surely, 2^{84687040628887} is an apocalyptic number.

84687040628887 is a deficient number, since it is larger than the sum of its proper divisors (1).

84687040628887 is an equidigital number, since it uses as much as digits as its factorization.

84687040628887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1849688064, while the sum is 76.

The spelling of 84687040628887 in words is "eighty-four trillion, six hundred eighty-seven billion, forty million, six hundred twenty-eight thousand, eight hundred eighty-seven".