72178342018 has 8 divisors (see below), whose sum is σ = 108268674048. Its totient is φ = 36088784004.

The previous prime is 72178341973. The next prime is 72178342039. The reversal of 72178342018 is 81024387127.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198255 + ... + 428557.

It is an arithmetic number, because the mean of its divisors is an integer number (13533584256).

Almost surely, 2^72178342018 is an apocalyptic number.

72178342018 is a deficient number, since it is larger than the sum of its proper divisors (36090332030).

72178342018 is a wasteful number, since it uses less digits than its factorization.

72178342018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387008.

The product of its (nonzero) digits is 150528, while the sum is 43.

The spelling of 72178342018 in words is "seventy-two billion, one hundred seventy-eight million, three hundred forty-two thousand, eighteen".