63968170539 has 32 divisors (see below), whose sum is σ = 107414669824. Its totient is φ = 32956761600.

The previous prime is 63968170531. The next prime is 63968170577. The reversal of 63968170539 is 93507186936.

It is a happy number.

It is not a de Polignac number, because 63968170539 - 2³ = 63968170531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63968170531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2712862 + ... + 2736339.

It is an arithmetic number, because the mean of its divisors is an integer number (3356708432).

Almost surely, 2^63968170539 is an apocalyptic number.

63968170539 is a deficient number, since it is larger than the sum of its proper divisors (43446499285).

63968170539 is a wasteful number, since it uses less digits than its factorization.

63968170539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5449267.

The product of its (nonzero) digits is 7348320, while the sum is 57.

The spelling of 63968170539 in words is "sixty-three billion, nine hundred sixty-eight million, one hundred seventy thousand, five hundred thirty-nine".