216154305156887 has 2 divisors, whose sum is σ = 216154305156888. Its totient is φ = 216154305156886.

The previous prime is 216154305156827. The next prime is 216154305156919. The reversal of 216154305156887 is 788651503451612.

It is a happy number.

216154305156887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216154305156887 - 2¹⁰ = 216154305155863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216154305156827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108077152578443 + 108077152578444.

It is an arithmetic number, because the mean of its divisors is an integer number (108077152578444).

Almost surely, 2^{216154305156887} is an apocalyptic number.

216154305156887 is a deficient number, since it is larger than the sum of its proper divisors (1).

216154305156887 is an equidigital number, since it uses as much as digits as its factorization.

216154305156887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384000, while the sum is 62.

The spelling of 216154305156887 in words is "two hundred sixteen trillion, one hundred fifty-four billion, three hundred five million, one hundred fifty-six thousand, eight hundred eighty-seven".