531605331664245 has 64 divisors (see below), whose sum is σ = 956415199104000. Its totient is φ = 280125928862208.

The previous prime is 531605331664243. The next prime is 531605331664301. The reversal of 531605331664245 is 542466133506135.

531605331664245 is a `hidden beast` number, since 5 + 3 + 1 + 6 + 0 + 5 + 331 + 6 + 64 + 245 = 666.

It is not a de Polignac number, because 531605331664245 - 2¹ = 531605331664243 is a prime.

It is a super-2 number, since 2×531605331664245² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 531605331664191 and 531605331664200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531605331664243) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 727210 + ... + 32615019.

It is an arithmetic number, because the mean of its divisors is an integer number (14943987486000).

Almost surely, 2^{531605331664245} is an apocalyptic number.

It is an amenable number.

531605331664245 is a deficient number, since it is larger than the sum of its proper divisors (424809867439755).

531605331664245 is a wasteful number, since it uses less digits than its factorization.

531605331664245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33343659 (or 33343653 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 54.

The spelling of 531605331664245 in words is "five hundred thirty-one trillion, six hundred five billion, three hundred thirty-one million, six hundred sixty-four thousand, two hundred forty-five".