550123222252440 has 256 divisors, whose sum is σ = 1793465524224000. Its totient is φ = 134480727498240.

The previous prime is 550123222252423. The next prime is 550123222252463. The reversal of 550123222252440 is 44252222321055.

It is a super-2 number, since 2×550123222252440² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 658249317 + ... + 659084523.

It is an arithmetic number, because the mean of its divisors is an integer number (7005724704000).

Almost surely, 2^{550123222252440} 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 550123222252440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (896732762112000).

550123222252440 is an abundant number, since it is smaller than the sum of its proper divisors (1243342301971560).

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

550123222252440 is a wasteful number, since it uses less digits than its factorization.

550123222252440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844590 (or 844586 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 39.

Adding to 550123222252440 its reverse (44252222321055), we get a palindrome (594375444573495).

The spelling of 550123222252440 in words is "five hundred fifty trillion, one hundred twenty-three billion, two hundred twenty-two million, two hundred fifty-two thousand, four hundred forty".