8206155442987 has 2 divisors, whose sum is σ = 8206155442988. Its totient is φ = 8206155442986.

The previous prime is 8206155442981. The next prime is 8206155442997. The reversal of 8206155442987 is 7892445516028.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8206155442987 - 2¹¹ = 8206155440939 is a prime.

It is not a weakly prime, because it can be changed into another prime (8206155442981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4103077721493 + 4103077721494.

It is an arithmetic number, because the mean of its divisors is an integer number (4103077721494).

Almost surely, 2^{8206155442987} is an apocalyptic number.

8206155442987 is a deficient number, since it is larger than the sum of its proper divisors (1).

8206155442987 is an equidigital number, since it uses as much as digits as its factorization.

8206155442987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38707200, while the sum is 61.

The spelling of 8206155442987 in words is "eight trillion, two hundred six billion, one hundred fifty-five million, four hundred forty-two thousand, nine hundred eighty-seven".