63456533505 has 96 divisors (see below), whose sum is σ = 119775936384. Its totient is φ = 30957508608.

The previous prime is 63456533479. The next prime is 63456533513. The reversal of 63456533505 is 50533565436.

63456533505 is a `hidden beast` number, since 6 + 3 + 4 + 565 + 33 + 50 + 5 = 666.

It is not a de Polignac number, because 63456533505 - 2¹⁷ = 63456402433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 4331002 + ... + 4345628.

It is an arithmetic number, because the mean of its divisors is an integer number (1247666004).

Almost surely, 2^63456533505 is an apocalyptic number.

It is an amenable number.

63456533505 is a deficient number, since it is larger than the sum of its proper divisors (56319402879).

63456533505 is a wasteful number, since it uses less digits than its factorization.

63456533505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14815 (or 14812 counting only the distinct ones).

The product of its (nonzero) digits is 2430000, while the sum is 45.

The spelling of 63456533505 in words is "sixty-three billion, four hundred fifty-six million, five hundred thirty-three thousand, five hundred five".