520173553432 has 32 divisors (see below), whose sum is σ = 1052857335600. Its totient is φ = 239507097984.

The previous prime is 520173553421. The next prime is 520173553433. The reversal of 520173553432 is 234355371025.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520173553433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5925003 + ... + 6012154.

Almost surely, 2^520173553432 is an apocalyptic number.

520173553432 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

520173553432 is an abundant number, since it is smaller than the sum of its proper divisors (532683782168).

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

520173553432 is a wasteful number, since it uses less digits than its factorization.

520173553432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11937595 (or 11937591 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 40.

The spelling of 520173553432 in words is "five hundred twenty billion, one hundred seventy-three million, five hundred fifty-three thousand, four hundred thirty-two".