63923456040 has 32 divisors (see below), whose sum is σ = 191770368480. Its totient is φ = 17046254912.

The previous prime is 63923455969. The next prime is 63923456071. The reversal of 63923456040 is 4065432936.

It is a junction number, because it is equal to n+sod(n) for n = 63923455983 and 63923456001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266347614 + ... + 266347853.

It is an arithmetic number, because the mean of its divisors is an integer number (5992824015).

Almost surely, 2^63923456040 is an apocalyptic number.

63923456040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63923456040 is an abundant number, since it is smaller than the sum of its proper divisors (127846912440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63923456040 is a wasteful number, since it uses less digits than its factorization.

63923456040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532695481 (or 532695477 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 42.

Adding to 63923456040 its reverse (4065432936), we get a palindrome (67988888976).

The spelling of 63923456040 in words is "sixty-three billion, nine hundred twenty-three million, four hundred fifty-six thousand, forty".