216538158103 has 2 divisors, whose sum is σ = 216538158104. Its totient is φ = 216538158102.

The previous prime is 216538158101. The next prime is 216538158143. The reversal of 216538158103 is 301851835612.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216538158103 - 2¹ = 216538158101 is a prime.

Together with 216538158101, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 216538158103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216538158101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108269079051 + 108269079052.

It is an arithmetic number, because the mean of its divisors is an integer number (108269079052).

Almost surely, 2^216538158103 is an apocalyptic number.

216538158103 is a deficient number, since it is larger than the sum of its proper divisors (1).

216538158103 is an equidigital number, since it uses as much as digits as its factorization.

216538158103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 216538158103 in words is "two hundred sixteen billion, five hundred thirty-eight million, one hundred fifty-eight thousand, one hundred three".