63440463123 has 12 divisors (see below), whose sum is σ = 92796177760. Its totient is φ = 41758279056.

The previous prime is 63440463113. The next prime is 63440463127. The reversal of 63440463123 is 32136404436.

63440463123 is a `hidden beast` number, since 6 + 34 + 40 + 463 + 123 = 666.

It is not a de Polignac number, because 63440463123 - 2⁵ = 63440463091 is a prime.

It is a super-2 number, since 2×63440463123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63440463127) 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 11 ways as a sum of consecutive naturals, for example, 44612836 + ... + 44614257.

Almost surely, 2^63440463123 is an apocalyptic number.

63440463123 is a deficient number, since it is larger than the sum of its proper divisors (29355714637).

63440463123 is a wasteful number, since it uses less digits than its factorization.

63440463123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89227178 (or 89227175 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

Adding to 63440463123 its reverse (32136404436), we get a palindrome (95576867559).

The spelling of 63440463123 in words is "sixty-three billion, four hundred forty million, four hundred sixty-three thousand, one hundred twenty-three".