73908739863 has 24 divisors (see below), whose sum is σ = 128429558400. Its totient is φ = 40010745744.

The previous prime is 73908739859. The next prime is 73908739871. The reversal of 73908739863 is 36893780937.

It is not a de Polignac number, because 73908739863 - 2² = 73908739859 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 73908739863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73908739763) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30871293 + ... + 30873686.

It is an arithmetic number, because the mean of its divisors is an integer number (5351231600).

Almost surely, 2^73908739863 is an apocalyptic number.

73908739863 is a deficient number, since it is larger than the sum of its proper divisors (54520818537).

73908739863 is a wasteful number, since it uses less digits than its factorization.

73908739863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61745011 (or 61745008 counting only the distinct ones).

The product of its (nonzero) digits is 41150592, while the sum is 63.

The spelling of 73908739863 in words is "seventy-three billion, nine hundred eight million, seven hundred thirty-nine thousand, eight hundred sixty-three".