522366691442 has 6 divisors (see below), whose sum is σ = 783551570349. Its totient is φ = 261182834660.

The previous prime is 522366691439. The next prime is 522366691453. The reversal of 522366691442 is 244196663225.

It can be written as a sum of positive squares in 2 ways, for example, as 262216709041 + 260149982401 = 512071^2 + 510049^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=511061.

It is a Duffinian 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 2 ways as a sum of consecutive naturals, for example, 766592 + ... + 1277652.

Almost surely, 2^522366691442 is an apocalyptic number.

522366691442 is a deficient number, since it is larger than the sum of its proper divisors (261184878907).

522366691442 is an frugal number, since it uses more digits than its factorization.

522366691442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022124 (or 511063 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 50.

Multiplying 522366691442 by its sum of digits (50), we get a square (26118334572100 = 5110610²).

The spelling of 522366691442 in words is "five hundred twenty-two billion, three hundred sixty-six million, six hundred ninety-one thousand, four hundred forty-two".