531797278372 has 12 divisors (see below), whose sum is σ = 930650425180. Its totient is φ = 265897156896.

The previous prime is 531797278349. The next prime is 531797278403. The reversal of 531797278372 is 273872797135.

It can be written as a sum of positive squares in 2 ways, for example, as 302647417956 + 229149860416 = 550134^2 + 478696^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 531797278372.

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 3 ways as a sum of consecutive naturals, for example, 999358 + ... + 1436074.

Almost surely, 2^531797278372 is an apocalyptic number.

It is an amenable number.

531797278372 is a deficient number, since it is larger than the sum of its proper divisors (398853146808).

531797278372 is a wasteful number, since it uses less digits than its factorization.

531797278372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741150 (or 741148 counting only the distinct ones).

The product of its digits is 31116960, while the sum is 61.

The spelling of 531797278372 in words is "five hundred thirty-one billion, seven hundred ninety-seven million, two hundred seventy-eight thousand, three hundred seventy-two".