72345636146 has 32 divisors (see below), whose sum is σ = 126677308800. Its totient is φ = 30974605200.

The previous prime is 72345636119. The next prime is 72345636211. The reversal of 72345636146 is 64163654327.

It is a self number, because there is not a number n which added to its sum of digits gives 72345636146.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 648761 + ... + 752051.

It is an arithmetic number, because the mean of its divisors is an integer number (3958665900).

Almost surely, 2^72345636146 is an apocalyptic number.

72345636146 is a deficient number, since it is larger than the sum of its proper divisors (54331672654).

72345636146 is a wasteful number, since it uses less digits than its factorization.

72345636146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104335 (or 104321 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 47.

The spelling of 72345636146 in words is "seventy-two billion, three hundred forty-five million, six hundred thirty-six thousand, one hundred forty-six".