216673231850 has 24 divisors (see below), whose sum is σ = 403207189740. Its totient is φ = 86627361920.

The previous prime is 216673231847. The next prime is 216673231919. The reversal of 216673231850 is 58132376612.

It can be written as a sum of positive squares in 6 ways, for example, as 14729948689 + 201943283161 = 121367^2 + 449381^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 943787 + ... + 1150686.

Almost surely, 2^216673231850 is an apocalyptic number.

216673231850 is a deficient number, since it is larger than the sum of its proper divisors (186533957890).

216673231850 is a wasteful number, since it uses less digits than its factorization.

216673231850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096554 (or 2096549 counting only the distinct ones).

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

The spelling of 216673231850 in words is "two hundred sixteen billion, six hundred seventy-three million, two hundred thirty-one thousand, eight hundred fifty".