550401512340 has 48 divisors (see below), whose sum is σ = 1541259276480. Its totient is φ = 146760875520.

The previous prime is 550401512279. The next prime is 550401512347. The reversal of 550401512340 is 43215104055.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 550401512298 and 550401512307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550401512347) 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, 298620 + ... + 1090860.

It is an arithmetic number, because the mean of its divisors is an integer number (32109568260).

Almost surely, 2^550401512340 is an apocalyptic number.

It is an amenable number.

550401512340 is an abundant number, since it is smaller than the sum of its proper divisors (990857764140).

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

550401512340 is a wasteful number, since it uses less digits than its factorization.

550401512340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803832 (or 803830 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 550401512340 its reverse (43215104055), we get a palindrome (593616616395).

The spelling of 550401512340 in words is "five hundred fifty billion, four hundred one million, five hundred twelve thousand, three hundred forty".