72163670210 has 8 divisors (see below), whose sum is σ = 129894606396. Its totient is φ = 28865468080.

The previous prime is 72163670149. The next prime is 72163670273. The reversal of 72163670210 is 1207636127.

It can be written as a sum of positive squares in 2 ways, for example, as 64679171041 + 7484499169 = 254321^2 + 86513^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3608183501 + ... + 3608183520.

Almost surely, 2^72163670210 is an apocalyptic number.

72163670210 is a deficient number, since it is larger than the sum of its proper divisors (57730936186).

72163670210 is a wasteful number, since it uses less digits than its factorization.

72163670210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7216367028.

The product of its (nonzero) digits is 21168, while the sum is 35.

The spelling of 72163670210 in words is "seventy-two billion, one hundred sixty-three million, six hundred seventy thousand, two hundred ten".