173403440020 has 48 divisors (see below), whose sum is σ = 382686530688. Its totient is φ = 65917272960.

The previous prime is 173403440011. The next prime is 173403440029. The reversal of 173403440020 is 20044304371.

It is an interprime number because it is at equal distance from previous prime (173403440011) and next prime (173403440029).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173403440029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2692936 + ... + 2756575.

It is an arithmetic number, because the mean of its divisors is an integer number (7972636056).

Almost surely, 2^173403440020 is an apocalyptic number.

173403440020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

173403440020 is an abundant number, since it is smaller than the sum of its proper divisors (209283090668).

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

173403440020 is a wasteful number, since it uses less digits than its factorization.

173403440020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449600 (or 5449598 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

Adding to 173403440020 its reverse (20044304371), we get a palindrome (193447744391).

The spelling of 173403440020 in words is "one hundred seventy-three billion, four hundred three million, four hundred forty thousand, twenty".