550626343640 has 128 divisors (see below), whose sum is σ = 1343102135040. Its totient is φ = 202368393216.

The previous prime is 550626343609. The next prime is 550626343693. The reversal of 550626343640 is 46343626055.

It is a junction number, because it is equal to n+sod(n) for n = 550626343591 and 550626343600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12666422 + ... + 12709818.

It is an arithmetic number, because the mean of its divisors is an integer number (10492985430).

Almost surely, 2^550626343640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550626343640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (671551067520).

550626343640 is an abundant number, since it is smaller than the sum of its proper divisors (792475791400).

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

550626343640 is a wasteful number, since it uses less digits than its factorization.

550626343640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43869 (or 43865 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 44.

Adding to 550626343640 its reverse (46343626055), we get a palindrome (596969969695).

The spelling of 550626343640 in words is "five hundred fifty billion, six hundred twenty-six million, three hundred forty-three thousand, six hundred forty".