13649412449 has 2 divisors, whose sum is σ = 13649412450. Its totient is φ = 13649412448.

The previous prime is 13649412431. The next prime is 13649412461. The reversal of 13649412449 is 94421494631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9536499025 + 4112913424 = 97655^2 + 64132^2 .

It is a cyclic number.

It is not a de Polignac number, because 13649412449 - 2¹⁶ = 13649346913 is a prime.

It is not a weakly prime, because it can be changed into another prime (13649412649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6824706224 + 6824706225.

It is an arithmetic number, because the mean of its divisors is an integer number (6824706225).

Almost surely, 2^13649412449 is an apocalyptic number.

It is an amenable number.

13649412449 is a deficient number, since it is larger than the sum of its proper divisors (1).

13649412449 is an equidigital number, since it uses as much as digits as its factorization.

13649412449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 47.

The spelling of 13649412449 in words is "thirteen billion, six hundred forty-nine million, four hundred twelve thousand, four hundred forty-nine".