545431354649 has 2 divisors, whose sum is σ = 545431354650. Its totient is φ = 545431354648.

The previous prime is 545431354639. The next prime is 545431354651. The reversal of 545431354649 is 946453134545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 525973057600 + 19458297049 = 725240^2 + 139493^2 .

It is a cyclic number.

It is not a de Polignac number, because 545431354649 - 2¹⁶ = 545431289113 is a prime.

Together with 545431354651, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 545431354649.

It is not a weakly prime, because it can be changed into another prime (545431354639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272715677324 + 272715677325.

It is an arithmetic number, because the mean of its divisors is an integer number (272715677325).

Almost surely, 2^545431354649 is an apocalyptic number.

It is an amenable number.

545431354649 is a deficient number, since it is larger than the sum of its proper divisors (1).

545431354649 is an equidigital number, since it uses as much as digits as its factorization.

545431354649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552000, while the sum is 53.

The spelling of 545431354649 in words is "five hundred forty-five billion, four hundred thirty-one million, three hundred fifty-four thousand, six hundred forty-nine".