63493416449 has 2 divisors, whose sum is σ = 63493416450. Its totient is φ = 63493416448.

The previous prime is 63493416431. The next prime is 63493416451. The reversal of 63493416449 is 94461439436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58887758224 + 4605658225 = 242668^2 + 67865^2 .

It is a cyclic number.

It is not a de Polignac number, because 63493416449 - 2¹⁶ = 63493350913 is a prime.

It is a super-2 number, since 2×63493416449² (a number of 22 digits) contains 22 as substring.

Together with 63493416451, 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 63493416449.

It is not a weakly prime, because it can be changed into another prime (63493416409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31746708224 + 31746708225.

It is an arithmetic number, because the mean of its divisors is an integer number (31746708225).

Almost surely, 2^63493416449 is an apocalyptic number.

It is an amenable number.

63493416449 is a deficient number, since it is larger than the sum of its proper divisors (1).

63493416449 is an equidigital number, since it uses as much as digits as its factorization.

63493416449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6718464, while the sum is 53.

The spelling of 63493416449 in words is "sixty-three billion, four hundred ninety-three million, four hundred sixteen thousand, four hundred forty-nine".