531085458473866 has 32 divisors (see below), whose sum is σ = 845940361996800. Its totient is φ = 249196200205056.

The previous prime is 531085458473827. The next prime is 531085458473893. The reversal of 531085458473866 is 668374854580135.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291267675 + ... + 293085361.

It is an arithmetic number, because the mean of its divisors is an integer number (26435636312400).

Almost surely, 2^{531085458473866} is an apocalyptic number.

531085458473866 is a deficient number, since it is larger than the sum of its proper divisors (314854903522934).

531085458473866 is a wasteful number, since it uses less digits than its factorization.

531085458473866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842678.

The product of its (nonzero) digits is 2322432000, while the sum is 73.

The spelling of 531085458473866 in words is "five hundred thirty-one trillion, eighty-five billion, four hundred fifty-eight million, four hundred seventy-three thousand, eight hundred sixty-six".