216125512423 has 2 divisors, whose sum is σ = 216125512424. Its totient is φ = 216125512422.

The previous prime is 216125512397. The next prime is 216125512511. The reversal of 216125512423 is 324215521612.

It is a happy number.

216125512423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216125512423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216125513423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108062756211 + 108062756212.

It is an arithmetic number, because the mean of its divisors is an integer number (108062756212).

Almost surely, 2^216125512423 is an apocalyptic number.

216125512423 is a deficient number, since it is larger than the sum of its proper divisors (1).

216125512423 is an equidigital number, since it uses as much as digits as its factorization.

216125512423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 34.

The spelling of 216125512423 in words is "two hundred sixteen billion, one hundred twenty-five million, five hundred twelve thousand, four hundred twenty-three".