1245054553349 has 2 divisors, whose sum is σ = 1245054553350. Its totient is φ = 1245054553348.

The previous prime is 1245054553321. The next prime is 1245054553423. The reversal of 1245054553349 is 9433554505421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1135812405025 + 109242148324 = 1065745^2 + 330518^2 .

It is an emirp because it is prime and its reverse (9433554505421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1245054553349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1245054553297 and 1245054553306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1245054553649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622527276674 + 622527276675.

It is an arithmetic number, because the mean of its divisors is an integer number (622527276675).

Almost surely, 2^{1245054553349} is an apocalyptic number.

It is an amenable number.

1245054553349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245054553349 is an equidigital number, since it uses as much as digits as its factorization.

1245054553349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480000, while the sum is 50.

The spelling of 1245054553349 in words is "one trillion, two hundred forty-five billion, fifty-four million, five hundred fifty-three thousand, three hundred forty-nine".