531633242166 has 64 divisors (see below), whose sum is σ = 1170946022400. Its totient is φ = 159890006016.

The previous prime is 531633242099. The next prime is 531633242171. The reversal of 531633242166 is 661242336135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2724865 + ... + 2913443.

It is an arithmetic number, because the mean of its divisors is an integer number (18296031600).

Almost surely, 2^531633242166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531633242166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (585473011200).

531633242166 is an abundant number, since it is smaller than the sum of its proper divisors (639312780234).

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

531633242166 is a wasteful number, since it uses less digits than its factorization.

531633242166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189413.

The product of its digits is 466560, while the sum is 42.

The spelling of 531633242166 in words is "five hundred thirty-one billion, six hundred thirty-three million, two hundred forty-two thousand, one hundred sixty-six".