2731557221449 has 16 divisors (see below), whose sum is σ = 3229442375680. Its totient is φ = 2260913996880.

The previous prime is 2731557221429. The next prime is 2731557221461. The reversal of 2731557221449 is 9441227551372.

2731557221449 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2731557221449 - 2⁷ = 2731557221321 is a prime.

It is a super-2 number, since 2×2731557221449² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2731557221396 and 2731557221405.

It is not an unprimeable number, because it can be changed into a prime (2731557221429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13493289 + ... + 13694230.

It is an arithmetic number, because the mean of its divisors is an integer number (201840148480).

Almost surely, 2^{2731557221449} is an apocalyptic number.

It is an amenable number.

2731557221449 is a deficient number, since it is larger than the sum of its proper divisors (497885154231).

2731557221449 is a wasteful number, since it uses less digits than its factorization.

2731557221449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27188020.

The product of its digits is 4233600, while the sum is 52.

The spelling of 2731557221449 in words is "two trillion, seven hundred thirty-one billion, five hundred fifty-seven million, two hundred twenty-one thousand, four hundred forty-nine".