531085685417320 has 64 divisors (see below), whose sum is σ = 1303578707976000. Its totient is φ = 193121363297280.

The previous prime is 531085685417297. The next prime is 531085685417351. The reversal of 531085685417320 is 23714586580135.

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, 127262112 + ... + 131369008.

It is an arithmetic number, because the mean of its divisors is an integer number (20368417312125).

Almost surely, 2^{531085685417320} is an apocalyptic number.

It is an amenable number.

531085685417320 is an abundant number, since it is smaller than the sum of its proper divisors (772493022558680).

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

531085685417320 is a wasteful number, since it uses less digits than its factorization.

531085685417320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4400818 (or 4400814 counting only the distinct ones).

The product of its (nonzero) digits is 24192000, while the sum is 58.

The spelling of 531085685417320 in words is "five hundred thirty-one trillion, eighty-five billion, six hundred eighty-five million, four hundred seventeen thousand, three hundred twenty".