531686144907 has 16 divisors (see below), whose sum is σ = 821930273280. Its totient is φ = 339046236936.

The previous prime is 531686144903. The next prime is 531686144917. The reversal of 531686144907 is 709441686135.

531686144907 is a `hidden beast` number, since 5 + 3 + 16 + 8 + 614 + 4 + 9 + 0 + 7 = 666.

It is not a de Polignac number, because 531686144907 - 2² = 531686144903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (531686144903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428088063 + ... + 428089304.

It is an arithmetic number, because the mean of its divisors is an integer number (51370642080).

Almost surely, 2^531686144907 is an apocalyptic number.

531686144907 is a deficient number, since it is larger than the sum of its proper divisors (290244128373).

531686144907 is a wasteful number, since it uses less digits than its factorization.

531686144907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856177399 (or 856177393 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 531686144907 in words is "five hundred thirty-one billion, six hundred eighty-six million, one hundred forty-four thousand, nine hundred seven".