531640252216 has 128 divisors (see below), whose sum is σ = 1043881344000. Its totient is φ = 253673704960.

The previous prime is 531640252207. The next prime is 531640252219. The reversal of 531640252216 is 612252046135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531640252219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 785288070 + ... + 785288746.

It is an arithmetic number, because the mean of its divisors is an integer number (8155323000).

Almost surely, 2^531640252216 is an apocalyptic number.

It is an amenable number.

531640252216 is a deficient number, since it is larger than the sum of its proper divisors (512241091784).

531640252216 is a wasteful number, since it uses less digits than its factorization.

531640252216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 531640252216 in words is "five hundred thirty-one billion, six hundred forty million, two hundred fifty-two thousand, two hundred sixteen".