1550123403320 has 32 divisors (see below), whose sum is σ = 3671344904400. Its totient is φ = 587415184128.

The previous prime is 1550123403293. The next prime is 1550123403401. The reversal of 1550123403320 is 233043210551.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1019817269 + ... + 1019818788.

Almost surely, 2^{1550123403320} is an apocalyptic number.

1550123403320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1550123403320 is an abundant number, since it is smaller than the sum of its proper divisors (2121221501080).

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

1550123403320 is a wasteful number, since it uses less digits than its factorization.

1550123403320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039636087 (or 2039636083 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 1550123403320 its reverse (233043210551), we get a palindrome (1783166613871).

The spelling of 1550123403320 in words is "one trillion, five hundred fifty billion, one hundred twenty-three million, four hundred three thousand, three hundred twenty".