216970228719 has 20 divisors (see below), whose sum is σ = 324217036440. Its totient is φ = 144601737840.

The previous prime is 216970228681. The next prime is 216970228751. The reversal of 216970228719 is 917822079612.

It is not a de Polignac number, because 216970228719 - 2¹² = 216970224623 is a prime.

It is a super-2 number, since 2×216970228719² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216970228799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 154909 + ... + 676710.

It is an arithmetic number, because the mean of its divisors is an integer number (16210851822).

Almost surely, 2^216970228719 is an apocalyptic number.

216970228719 is a deficient number, since it is larger than the sum of its proper divisors (107246807721).

216970228719 is an equidigital number, since it uses as much as digits as its factorization.

216970228719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834852 (or 834843 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 216970228719 in words is "two hundred sixteen billion, nine hundred seventy million, two hundred twenty-eight thousand, seven hundred nineteen".