531085421572608 has 160 divisors (see below), whose sum is σ = 1617034264433280. Its totient is φ = 151732232847360.

The previous prime is 531085421572583. The next prime is 531085421572633. The reversal of 531085421572608 is 806275124580135.

It is an interprime number because it is at equal distance from previous prime (531085421572583) and next prime (531085421572633).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254438878 + ... + 256517666.

It is an arithmetic number, because the mean of its divisors is an integer number (10106464152708).

Almost surely, 2^{531085421572608} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531085421572608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (808517132216640).

531085421572608 is an abundant number, since it is smaller than the sum of its proper divisors (1085948842860672).

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

531085421572608 is a wasteful number, since it uses less digits than its factorization.

531085421572608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102578 (or 2102562 counting only the distinct ones).

The product of its (nonzero) digits is 16128000, while the sum is 57.

The spelling of 531085421572608 in words is "five hundred thirty-one trillion, eighty-five billion, four hundred twenty-one million, five hundred seventy-two thousand, six hundred eight".