15550211142 has 32 divisors (see below), whose sum is σ = 34565873760. Its totient is φ = 5181926400.

The previous prime is 15550211141. The next prime is 15550211153. The reversal of 15550211142 is 24111205551.

It is a happy number.

15550211142 is a `hidden beast` number, since 1 + 5 + 5 + 502 + 11 + 142 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15550211141) 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 15 ways as a sum of consecutive naturals, for example, 159142 + ... + 237542.

It is an arithmetic number, because the mean of its divisors is an integer number (1080183555).

Almost surely, 2^15550211142 is an apocalyptic number.

15550211142 is an abundant number, since it is smaller than the sum of its proper divisors (19015662618).

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

15550211142 is a wasteful number, since it uses less digits than its factorization.

15550211142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82085 (or 82079 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

Adding to 15550211142 its reverse (24111205551), we get a palindrome (39661416693).

The spelling of 15550211142 in words is "fifteen billion, five hundred fifty million, two hundred eleven thousand, one hundred forty-two".