531216552266 has 4 divisors (see below), whose sum is σ = 796824828402. Its totient is φ = 265608276132.

The previous prime is 531216552253. The next prime is 531216552277. The reversal of 531216552266 is 662255612135.

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

It can be written as a sum of positive squares in only one way, i.e., 278630901025 + 252585651241 = 527855^2 + 502579^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 132804138065 + ... + 132804138068.

Almost surely, 2^531216552266 is an apocalyptic number.

531216552266 is a deficient number, since it is larger than the sum of its proper divisors (265608276136).

531216552266 is a wasteful number, since it uses less digits than its factorization.

531216552266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265608276135.

The product of its digits is 648000, while the sum is 44.

The spelling of 531216552266 in words is "five hundred thirty-one billion, two hundred sixteen million, five hundred fifty-two thousand, two hundred sixty-six".