63724959478 has 16 divisors (see below), whose sum is σ = 97399520496. Its totient is φ = 31258558240.

The previous prime is 63724959461. The next prime is 63724959539. The reversal of 63724959478 is 87495942736.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1748025 + ... + 1784107.

It is an arithmetic number, because the mean of its divisors is an integer number (6087470031).

Almost surely, 2^63724959478 is an apocalyptic number.

63724959478 is a deficient number, since it is larger than the sum of its proper divisors (33674561018).

63724959478 is a wasteful number, since it uses less digits than its factorization.

63724959478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52799.

The product of its digits is 91445760, while the sum is 64.

The spelling of 63724959478 in words is "sixty-three billion, seven hundred twenty-four million, nine hundred fifty-nine thousand, four hundred seventy-eight".