12142143451550 has 72 divisors (see below), whose sum is σ = 26272404545544. Its totient is φ = 4162898456640.

The previous prime is 12142143451519. The next prime is 12142143451553. The reversal of 12142143451550 is 5515434124121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142143451553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 133521197 + ... + 133612103.

It is an arithmetic number, because the mean of its divisors is an integer number (364894507577).

Almost surely, 2^{12142143451550} is an apocalyptic number.

12142143451550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12142143451550 is an abundant number, since it is smaller than the sum of its proper divisors (14130261093994).

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

12142143451550 is a wasteful number, since it uses less digits than its factorization.

12142143451550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145450 (or 145438 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 38.

Adding to 12142143451550 its reverse (5515434124121), we get a palindrome (17657577575671).

The spelling of 12142143451550 in words is "twelve trillion, one hundred forty-two billion, one hundred forty-three million, four hundred fifty-one thousand, five hundred fifty".