271506649969 has 3 divisors (see below), whose sum is σ = 271507171033. Its totient is φ = 271506128906.

The previous prime is 271506649963. The next prime is 271506649991. The reversal of 271506649969 is 969946605172.

It is a happy number.

The square root of 271506649969 is 521063.

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 271506649969 - 2⁵ = 271506649937 is a prime.

It is a super-2 number, since 2×271506649969² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 271506649969.

It is not an unprimeable number, because it can be changed into a prime (271506649963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 260532 + ... + 781594.

Almost surely, 2^271506649969 is an apocalyptic number.

271506649969 is the 521063-rd square number.

271506649969 is the 260532-nd centered octagonal number.

It is an amenable number.

271506649969 is a deficient number, since it is larger than the sum of its proper divisors (521064).

271506649969 is an frugal number, since it uses more digits than its factorization.

271506649969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042126 (or 521063 counting only the distinct ones).

The product of its (nonzero) digits is 44089920, while the sum is 64.

Multiplying 271506649969 by its sum of digits (64), we get a square (17376425598016 = 4168504²).

The spelling of 271506649969 in words is "two hundred seventy-one billion, five hundred six million, six hundred forty-nine thousand, nine hundred sixty-nine".