1313552226449 has 2 divisors, whose sum is σ = 1313552226450. Its totient is φ = 1313552226448.

The previous prime is 1313552226431. The next prime is 1313552226463. The reversal of 1313552226449 is 9446222553131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1173203091025 + 140349135424 = 1083145^2 + 374632^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313552226449 - 2¹⁶ = 1313552160913 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313552226479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656776113224 + 656776113225.

It is an arithmetic number, because the mean of its divisors is an integer number (656776113225).

Almost surely, 2^{1313552226449} is an apocalyptic number.

It is an amenable number.

1313552226449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313552226449 is an equidigital number, since it uses as much as digits as its factorization.

1313552226449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555200, while the sum is 47.

The spelling of 1313552226449 in words is "one trillion, three hundred thirteen billion, five hundred fifty-two million, two hundred twenty-six thousand, four hundred forty-nine".