216343853893117 has 4 divisors (see below), whose sum is σ = 221375106309280. Its totient is φ = 211312601476956.

The previous prime is 216343853893073. The next prime is 216343853893121. The reversal of 216343853893117 is 711398358343612.

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 216343853893117 - 2¹⁵ = 216343853860349 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 (216343853893147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2515626208017 + ... + 2515626208102.

It is an arithmetic number, because the mean of its divisors is an integer number (55343776577320).

Almost surely, 2^{216343853893117} is an apocalyptic number.

It is an amenable number.

216343853893117 is a deficient number, since it is larger than the sum of its proper divisors (5031252416163).

216343853893117 is an equidigital number, since it uses as much as digits as its factorization.

216343853893117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5031252416162.

The product of its digits is 78382080, while the sum is 64.

The spelling of 216343853893117 in words is "two hundred sixteen trillion, three hundred forty-three billion, eight hundred fifty-three million, eight hundred ninety-three thousand, one hundred seventeen".