216590825474 has 4 divisors (see below), whose sum is σ = 324886238214. Its totient is φ = 108295412736.

The previous prime is 216590825467. The next prime is 216590825491. The reversal of 216590825474 is 474528095612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 181086844849 + 35503980625 = 425543^2 + 188425^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54147706367 + ... + 54147706370.

Almost surely, 2^216590825474 is an apocalyptic number.

216590825474 is a deficient number, since it is larger than the sum of its proper divisors (108295412740).

216590825474 is a wasteful number, since it uses less digits than its factorization.

216590825474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108295412739.

The product of its (nonzero) digits is 4838400, while the sum is 53.

The spelling of 216590825474 in words is "two hundred sixteen billion, five hundred ninety million, eight hundred twenty-five thousand, four hundred seventy-four".