531643263748 has 12 divisors (see below), whose sum is σ = 931294154700. Its totient is φ = 265559219552.

The previous prime is 531643263719. The next prime is 531643263751. The reversal of 531643263748 is 847362346135.

It can be written as a sum of positive squares in 2 ways, for example, as 23912911044 + 507730352704 = 154638^2 + 712552^2 .

It is a junction number, because it is equal to n+sod(n) for n = 531643263695 and 531643263704.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65598523 + ... + 65606626.

It is an arithmetic number, because the mean of its divisors is an integer number (77607846225).

Almost surely, 2^531643263748 is an apocalyptic number.

It is an amenable number.

531643263748 is a deficient number, since it is larger than the sum of its proper divisors (399650890952).

531643263748 is a wasteful number, since it uses less digits than its factorization.

531643263748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131206166 (or 131206164 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 52.

The spelling of 531643263748 in words is "five hundred thirty-one billion, six hundred forty-three million, two hundred sixty-three thousand, seven hundred forty-eight".