2731557221142 has 32 divisors (see below), whose sum is σ = 5476745670144. Its totient is φ = 908248852800.

The previous prime is 2731557221069. The next prime is 2731557221147. The reversal of 2731557221142 is 2411227551372.

It is a happy number.

It is a super-2 number, since 2×2731557221142² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2731557221094 and 2731557221103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2731557221147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6460167 + ... + 6869997.

It is an arithmetic number, because the mean of its divisors is an integer number (171148302192).

Almost surely, 2^{2731557221142} is an apocalyptic number.

2731557221142 is an abundant number, since it is smaller than the sum of its proper divisors (2745188449002).

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

2731557221142 is a wasteful number, since it uses less digits than its factorization.

2731557221142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412604.

The product of its digits is 235200, while the sum is 42.

The spelling of 2731557221142 in words is "two trillion, seven hundred thirty-one billion, five hundred fifty-seven million, two hundred twenty-one thousand, one hundred forty-two".