73195880138 has 8 divisors (see below), whose sum is σ = 110181785088. Its totient is φ = 36468618444.

The previous prime is 73195880137. The next prime is 73195880161. The reversal of 73195880138 is 83108859137.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 73195880138.

It is not an unprimeable number, because it can be changed into a prime (73195880137) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 64660106 + ... + 64661237.

It is an arithmetic number, because the mean of its divisors is an integer number (13772723136).

Almost surely, 2^73195880138 is an apocalyptic number.

73195880138 is a deficient number, since it is larger than the sum of its proper divisors (36985904950).

73195880138 is a wasteful number, since it uses less digits than its factorization.

73195880138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129321628.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 73195880138 in words is "seventy-three billion, one hundred ninety-five million, eight hundred eighty thousand, one hundred thirty-eight".