87962116861 has 2 divisors, whose sum is σ = 87962116862. Its totient is φ = 87962116860.

The previous prime is 87962116829. The next prime is 87962116889. The reversal of 87962116861 is 16861126978.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87808505625 + 153611236 = 296325^2 + 12394^2 .

It is a cyclic number.

It is not a de Polignac number, because 87962116861 - 2⁵ = 87962116829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87962116061) 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, 43981058430 + 43981058431.

It is an arithmetic number, because the mean of its divisors is an integer number (43981058431).

Almost surely, 2^87962116861 is an apocalyptic number.

It is an amenable number.

87962116861 is a deficient number, since it is larger than the sum of its proper divisors (1).

87962116861 is an equidigital number, since it uses as much as digits as its factorization.

87962116861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 55.

The spelling of 87962116861 in words is "eighty-seven billion, nine hundred sixty-two million, one hundred sixteen thousand, eight hundred sixty-one".