531659264987 has 24 divisors (see below), whose sum is σ = 584280680256. Its totient is φ = 482081048064.

The previous prime is 531659264957. The next prime is 531659264993. The reversal of 531659264987 is 789462956135.

It is not a de Polignac number, because 531659264987 - 2¹⁰ = 531659263963 is a prime.

It is a super-2 number, since 2×531659264987² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (531659264957) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6579353 + ... + 6659669.

It is an arithmetic number, because the mean of its divisors is an integer number (24345028344).

Almost surely, 2^531659264987 is an apocalyptic number.

531659264987 is a deficient number, since it is larger than the sum of its proper divisors (52621415269).

531659264987 is a wasteful number, since it uses less digits than its factorization.

531659264987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80855 (or 80826 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 65.

The spelling of 531659264987 in words is "five hundred thirty-one billion, six hundred fifty-nine million, two hundred sixty-four thousand, nine hundred eighty-seven".