523556422516 has 6 divisors (see below), whose sum is σ = 916223739410. Its totient is φ = 261778211256.

The previous prime is 523556422397. The next prime is 523556422517. The reversal of 523556422516 is 615224655325.

It can be written as a sum of positive squares in only one way, i.e., 495601920100 + 27954502416 = 703990^2 + 167196^2 .

It is a super-2 number, since 2×523556422516² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523556422517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65444552811 + ... + 65444552818.

Almost surely, 2^523556422516 is an apocalyptic number.

It is an amenable number.

523556422516 is a deficient number, since it is larger than the sum of its proper divisors (392667316894).

523556422516 is a wasteful number, since it uses less digits than its factorization.

523556422516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130889105633 (or 130889105631 counting only the distinct ones).

The product of its digits is 2160000, while the sum is 46.

The spelling of 523556422516 in words is "five hundred twenty-three billion, five hundred fifty-six million, four hundred twenty-two thousand, five hundred sixteen".