520423155350 has 24 divisors (see below), whose sum is σ = 1106270936688. Its totient is φ = 178430796000.

The previous prime is 520423155319. The next prime is 520423155359. The reversal of 520423155350 is 53551324025.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 520423155350.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520423155359) 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, 743461301 + ... + 743462000.

It is an arithmetic number, because the mean of its divisors is an integer number (46094622362).

Almost surely, 2^520423155350 is an apocalyptic number.

520423155350 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

520423155350 is an abundant number, since it is smaller than the sum of its proper divisors (585847781338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520423155350 is a wasteful number, since it uses less digits than its factorization.

520423155350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486923320 (or 1486923315 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

Adding to 520423155350 its reverse (53551324025), we get a palindrome (573974479375).

The spelling of 520423155350 in words is "five hundred twenty billion, four hundred twenty-three million, one hundred fifty-five thousand, three hundred fifty".