520231659442 has 24 divisors (see below), whose sum is σ = 858144099708. Its totient is φ = 236356792320.

The previous prime is 520231659421. The next prime is 520231659443. The reversal of 520231659442 is 244956132025.

It can be written as a sum of positive squares in 2 ways, for example, as 514202292241 + 6029367201 = 717079^2 + 77649^2 .

It is not an unprimeable number, because it can be changed into a prime (520231659443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2658 + ... + 1020034.

Almost surely, 2^520231659442 is an apocalyptic number.

520231659442 is a deficient number, since it is larger than the sum of its proper divisors (337912440266).

520231659442 is a wasteful number, since it uses less digits than its factorization.

520231659442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019514 (or 1019503 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 520231659442 in words is "five hundred twenty billion, two hundred thirty-one million, six hundred fifty-nine thousand, four hundred forty-two".