216253573252 has 6 divisors (see below), whose sum is σ = 378443753198. Its totient is φ = 108126786624.

The previous prime is 216253573241. The next prime is 216253573273. The reversal of 216253573252 is 252375352612.

It can be written as a sum of positive squares in only one way, i.e., 123871618116 + 92381955136 = 351954^2 + 303944^2 .

It is a junction number, because it is equal to n+sod(n) for n = 216253573199 and 216253573208.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27031696653 + ... + 27031696660.

Almost surely, 2^216253573252 is an apocalyptic number.

It is an amenable number.

216253573252 is a deficient number, since it is larger than the sum of its proper divisors (162190179946).

216253573252 is a wasteful number, since it uses less digits than its factorization.

216253573252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54063393317 (or 54063393315 counting only the distinct ones).

The product of its digits is 756000, while the sum is 43.

The spelling of 216253573252 in words is "two hundred sixteen billion, two hundred fifty-three million, five hundred seventy-three thousand, two hundred fifty-two".