63440718049 has 8 divisors (see below), whose sum is σ = 64040865408. Its totient is φ = 62840705040.

The previous prime is 63440718023. The next prime is 63440718053. The reversal of 63440718049 is 94081704436.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63440718049 - 2¹⁷ = 63440586977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63440718079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1092744 + ... + 1149334.

It is an arithmetic number, because the mean of its divisors is an integer number (8005108176).

Almost surely, 2^63440718049 is an apocalyptic number.

It is an amenable number.

63440718049 is a deficient number, since it is larger than the sum of its proper divisors (600147359).

63440718049 is a wasteful number, since it uses less digits than its factorization.

63440718049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67175.

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 63440718049 in words is "sixty-three billion, four hundred forty million, seven hundred eighteen thousand, forty-nine".