520211022451 has 16 divisors (see below), whose sum is σ = 541397491200. Its totient is φ = 499248294048.

The previous prime is 520211022433. The next prime is 520211022497. The reversal of 520211022451 is 154220112025.

It is a cyclic number.

It is not a de Polignac number, because 520211022451 - 2²³ = 520202633843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520211029451) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4011046 + ... + 4138708.

It is an arithmetic number, because the mean of its divisors is an integer number (33837343200).

Almost surely, 2^520211022451 is an apocalyptic number.

520211022451 is a deficient number, since it is larger than the sum of its proper divisors (21186468749).

520211022451 is a wasteful number, since it uses less digits than its factorization.

520211022451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128538.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 520211022451 its reverse (154220112025), we get a palindrome (674431134476).

The spelling of 520211022451 in words is "five hundred twenty billion, two hundred eleven million, twenty-two thousand, four hundred fifty-one".