531342574044436 has 144 divisors (see below), whose sum is σ = 1174220702516736. Its totient is φ = 205929563400000.

The previous prime is 531342574044341. The next prime is 531342574044439. The reversal of 531342574044436 is 634440475243135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531342574044439) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 668858391 + ... + 669652321.

It is an arithmetic number, because the mean of its divisors is an integer number (8154310434144).

Almost surely, 2^{531342574044436} 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 531342574044436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (587110351258368).

531342574044436 is an abundant number, since it is smaller than the sum of its proper divisors (642878128472300).

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

531342574044436 is a wasteful number, since it uses less digits than its factorization.

531342574044436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795002 (or 794989 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 55.

The spelling of 531342574044436 in words is "five hundred thirty-one trillion, three hundred forty-two billion, five hundred seventy-four million, forty-four thousand, four hundred thirty-six".