2547365403449 has 4 divisors (see below), whose sum is σ = 2547521041140. Its totient is φ = 2547209765760.

The previous prime is 2547365403389. The next prime is 2547365403463. The reversal of 2547365403449 is 9443045637452.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 633030279424 + 1914335124025 = 795632^2 + 1383595^2 .

It is a cyclic number.

It is not a de Polignac number, because 2547365403449 - 2⁴⁰ = 1447853775673 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2547365403394 and 2547365403403.

It is not an unprimeable number, because it can be changed into a prime (2547362403449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77794292 + ... + 77827029.

It is an arithmetic number, because the mean of its divisors is an integer number (636880260285).

Almost surely, 2^{2547365403449} is an apocalyptic number.

It is an amenable number.

2547365403449 is a deficient number, since it is larger than the sum of its proper divisors (155637691).

2547365403449 is a wasteful number, since it uses less digits than its factorization.

2547365403449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155637690.

The product of its (nonzero) digits is 43545600, while the sum is 56.

The spelling of 2547365403449 in words is "two trillion, five hundred forty-seven billion, three hundred sixty-five million, four hundred three thousand, four hundred forty-nine".