531664020272 has 120 divisors (see below), whose sum is σ = 1307577738240. Its totient is φ = 207084017280.

The previous prime is 531664020269. The next prime is 531664020281. The reversal of 531664020272 is 272020466135.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43864229 + ... + 43876347.

It is an arithmetic number, because the mean of its divisors is an integer number (10896481152).

Almost surely, 2^531664020272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531664020272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653788869120).

531664020272 is an abundant number, since it is smaller than the sum of its proper divisors (775913717968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531664020272 is a wasteful number, since it uses less digits than its factorization.

531664020272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17239 (or 17226 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 531664020272 in words is "five hundred thirty-one billion, six hundred sixty-four million, twenty thousand, two hundred seventy-two".