1550411345220 has 96 divisors (see below), whose sum is σ = 4492833851520. Its totient is φ = 399009730560.

The previous prime is 1550411345209. The next prime is 1550411345227. The reversal of 1550411345220 is 225431140551.

It is not an unprimeable number, because it can be changed into a prime (1550411345227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3759015 + ... + 4151025.

It is an arithmetic number, because the mean of its divisors is an integer number (46800352620).

Almost surely, 2^{1550411345220} is an apocalyptic number.

1550411345220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1550411345220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2246416925760).

1550411345220 is an abundant number, since it is smaller than the sum of its proper divisors (2942422506300).

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

1550411345220 is a wasteful number, since it uses less digits than its factorization.

1550411345220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394325 (or 394323 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 1550411345220 its reverse (225431140551), we get a palindrome (1775842485771).

The spelling of 1550411345220 in words is "one trillion, five hundred fifty billion, four hundred eleven million, three hundred forty-five thousand, two hundred twenty".