216154626317 has 4 divisors (see below), whose sum is σ = 247033858656. Its totient is φ = 185275393980.

The previous prime is 216154626277. The next prime is 216154626329. The reversal of 216154626317 is 713626451612.

216154626317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216154626317 - 2²⁶ = 216087517453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216154626397) 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 in 3 ways as a sum of consecutive naturals, for example, 15439616159 + ... + 15439616172.

It is an arithmetic number, because the mean of its divisors is an integer number (61758464664).

Almost surely, 2^216154626317 is an apocalyptic number.

It is an amenable number.

216154626317 is a deficient number, since it is larger than the sum of its proper divisors (30879232339).

216154626317 is an equidigital number, since it uses as much as digits as its factorization.

216154626317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30879232338.

The product of its digits is 362880, while the sum is 44.

The spelling of 216154626317 in words is "two hundred sixteen billion, one hundred fifty-four million, six hundred twenty-six thousand, three hundred seventeen".