216173349057 has 8 divisors (see below), whose sum is σ = 288237845920. Its totient is φ = 144112209120.

The previous prime is 216173349017. The next prime is 216173349061. The reversal of 216173349057 is 750943371612.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216173349057 - 2⁷ = 216173348929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216173348997 and 216173349015.

It is not an unprimeable number, because it can be changed into a prime (216173349017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684919 + ... + 949452.

It is an arithmetic number, because the mean of its divisors is an integer number (36029730740).

Almost surely, 2^216173349057 is an apocalyptic number.

It is an amenable number.

216173349057 is a deficient number, since it is larger than the sum of its proper divisors (72064496863).

216173349057 is a wasteful number, since it uses less digits than its factorization.

216173349057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678463.

The product of its (nonzero) digits is 952560, while the sum is 48.

The spelling of 216173349057 in words is "two hundred sixteen billion, one hundred seventy-three million, three hundred forty-nine thousand, fifty-seven".