227213043545 has 4 divisors (see below), whose sum is σ = 272655652260. Its totient is φ = 181770434832.

The previous prime is 227213043529. The next prime is 227213043557. The reversal of 227213043545 is 545340312722.

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

It can be written as a sum of positive squares in 2 ways, for example, as 111757158601 + 115455884944 = 334301^2 + 339788^2 .

It is a cyclic number.

It is not a de Polignac number, because 227213043545 - 2⁴ = 227213043529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 227213043499 and 227213043508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22721304350 + ... + 22721304359.

It is an arithmetic number, because the mean of its divisors is an integer number (68163913065).

Almost surely, 2^227213043545 is an apocalyptic number.

It is an amenable number.

227213043545 is a deficient number, since it is larger than the sum of its proper divisors (45442608715).

227213043545 is an equidigital number, since it uses as much as digits as its factorization.

227213043545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45442608714.

The product of its (nonzero) digits is 201600, while the sum is 38.

The spelling of 227213043545 in words is "two hundred twenty-seven billion, two hundred thirteen million, forty-three thousand, five hundred forty-five".