4270781828569 has 3 divisors (see below), whose sum is σ = 4270783895157. Its totient is φ = 4270779761982.

The previous prime is 4270781828567. The next prime is 4270781828587. The reversal of 4270781828569 is 9658281870724.

The square root of 4270781828569 is 2066587.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 4270781828569 - 2¹ = 4270781828567 is a prime.

It is a super-2 number, since 2×4270781828569² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4270781828567) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1033294 + ... + 3099880.

It is an arithmetic number, because the mean of its divisors is an integer number (1423594631719).

Almost surely, 2^{4270781828569} is an apocalyptic number.

4270781828569 is the 2066587-th square number.

4270781828569 is the 1033294-th centered octagonal number.

It is an amenable number.

4270781828569 is a deficient number, since it is larger than the sum of its proper divisors (2066588).

4270781828569 is an frugal number, since it uses more digits than its factorization.

4270781828569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4133174 (or 2066587 counting only the distinct ones).

The product of its (nonzero) digits is 108380160, while the sum is 67.

The spelling of 4270781828569 in words is "four trillion, two hundred seventy billion, seven hundred eighty-one million, eight hundred twenty-eight thousand, five hundred sixty-nine".