531660520537 has 8 divisors (see below), whose sum is σ = 536056056000. Its totient is φ = 527276016624.

The previous prime is 531660520519. The next prime is 531660520541. The reversal of 531660520537 is 735025066135.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 531660520537 - 2¹⁵ = 531660487769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 531660520493 and 531660520502.

It is not an unprimeable number, because it can be changed into a prime (531660530537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2661087 + ... + 2853892.

It is an arithmetic number, because the mean of its divisors is an integer number (67007007000).

Almost surely, 2^531660520537 is an apocalyptic number.

It is an amenable number.

531660520537 is a deficient number, since it is larger than the sum of its proper divisors (4395535463).

531660520537 is a wasteful number, since it uses less digits than its factorization.

531660520537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5515775.

The product of its (nonzero) digits is 567000, while the sum is 43.

The spelling of 531660520537 in words is "five hundred thirty-one billion, six hundred sixty million, five hundred twenty thousand, five hundred thirty-seven".