531471178420 has 288 divisors, whose sum is σ = 1465265894400. Its totient is φ = 160194456576.

The previous prime is 531471178387. The next prime is 531471178493. The reversal of 531471178420 is 24871174135.

It is a super-2 number, since 2×531471178420² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 70027986 + ... + 70035574.

It is an arithmetic number, because the mean of its divisors is an integer number (5087728800).

Almost surely, 2^531471178420 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 531471178420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (732632947200).

531471178420 is an abundant number, since it is smaller than the sum of its proper divisors (933794715980).

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

531471178420 is a wasteful number, since it uses less digits than its factorization.

531471178420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7887 (or 7878 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 531471178420 in words is "five hundred thirty-one billion, four hundred seventy-one million, one hundred seventy-eight thousand, four hundred twenty".