215250354243 has 12 divisors (see below), whose sum is σ = 311015331640. Its totient is φ = 143454934656.

The previous prime is 215250354157. The next prime is 215250354289. The reversal of 215250354243 is 342453052512.

215250354243 is a `hidden beast` number, since 2 + 15 + 2 + 50 + 354 + 243 = 666.

It is not a de Polignac number, because 215250354243 - 2⁸ = 215250353987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215250354198 and 215250354207.

It is not an unprimeable number, because it can be changed into a prime (215250350243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3745021 + ... + 3802062.

Almost surely, 2^215250354243 is an apocalyptic number.

215250354243 is a deficient number, since it is larger than the sum of its proper divisors (95764977397).

215250354243 is a wasteful number, since it uses less digits than its factorization.

215250354243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7550258 (or 7550255 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 215250354243 in words is "two hundred fifteen billion, two hundred fifty million, three hundred fifty-four thousand, two hundred forty-three".