531565046066 has 16 divisors (see below), whose sum is σ = 834673071744. Its totient is φ = 253414528224.

The previous prime is 531565046011. The next prime is 531565046093. The reversal of 531565046066 is 660640565135.

It is a super-2 number, since 2×531565046066² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 531565046066.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18445286 + ... + 18474081.

It is an arithmetic number, because the mean of its divisors is an integer number (52167066984).

Almost surely, 2^531565046066 is an apocalyptic number.

531565046066 is a deficient number, since it is larger than the sum of its proper divisors (303108025678).

531565046066 is a wasteful number, since it uses less digits than its factorization.

531565046066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36919705.

The product of its (nonzero) digits is 1944000, while the sum is 47.

The spelling of 531565046066 in words is "five hundred thirty-one billion, five hundred sixty-five million, forty-six thousand, sixty-six".