520443144332553 has 48 divisors (see below), whose sum is σ = 752674784581824. Its totient is φ = 319733261003520.

The previous prime is 520443144332537. The next prime is 520443144332557. The reversal of 520443144332553 is 355233441344025.

It is not a de Polignac number, because 520443144332553 - 2⁴ = 520443144332537 is a prime.

It is a super-2 number, since 2×520443144332553² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (520443144332557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8419608075 + ... + 8419669887.

It is an arithmetic number, because the mean of its divisors is an integer number (15680724678788).

Almost surely, 2^{520443144332553} is an apocalyptic number.

It is an amenable number.

520443144332553 is a deficient number, since it is larger than the sum of its proper divisors (232231640249271).

520443144332553 is a wasteful number, since it uses less digits than its factorization.

520443144332553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89546 (or 89533 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 48.

Adding to 520443144332553 its reverse (355233441344025), we get a palindrome (875676585676578).

The spelling of 520443144332553 in words is "five hundred twenty trillion, four hundred forty-three billion, one hundred forty-four million, three hundred thirty-two thousand, five hundred fifty-three".