87516979211 has 2 divisors, whose sum is σ = 87516979212. Its totient is φ = 87516979210.

The previous prime is 87516979171. The next prime is 87516979213. The reversal of 87516979211 is 11297961578.

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-87516979211 is a prime.

Together with 87516979213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87516979213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43758489605 + 43758489606.

It is an arithmetic number, because the mean of its divisors is an integer number (43758489606).

Almost surely, 2^87516979211 is an apocalyptic number.

87516979211 is a deficient number, since it is larger than the sum of its proper divisors (1).

87516979211 is an equidigital number, since it uses as much as digits as its factorization.

87516979211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 56.

The spelling of 87516979211 in words is "eighty-seven billion, five hundred sixteen million, nine hundred seventy-nine thousand, two hundred eleven".