531085458473864 has 32 divisors (see below), whose sum is σ = 1148111420987520. Its totient is φ = 225593823065856.

The previous prime is 531085458473827. The next prime is 531085458473893. The reversal of 531085458473864 is 468374854580135.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41963130404 + ... + 41963143059.

It is an arithmetic number, because the mean of its divisors is an integer number (35878481905860).

Almost surely, 2^{531085458473864} is an apocalyptic number.

It is an amenable number.

531085458473864 is an abundant number, since it is smaller than the sum of its proper divisors (617025962513656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531085458473864 is a wasteful number, since it uses less digits than its factorization.

531085458473864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83926273589 (or 83926273585 counting only the distinct ones).

The product of its (nonzero) digits is 1548288000, while the sum is 71.

The spelling of 531085458473864 in words is "five hundred thirty-one trillion, eighty-five billion, four hundred fifty-eight million, four hundred seventy-three thousand, eight hundred sixty-four".