72345636122 has 8 divisors (see below), whose sum is σ = 111042139296. Its totient is φ = 35331589692.

The previous prime is 72345636119. The next prime is 72345636211. The reversal of 72345636122 is 22163654327.

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 72345636122.

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, 420614078 + ... + 420614249.

It is an arithmetic number, because the mean of its divisors is an integer number (13880267412).

Almost surely, 2^72345636122 is an apocalyptic number.

72345636122 is a deficient number, since it is larger than the sum of its proper divisors (38696503174).

72345636122 is a wasteful number, since it uses less digits than its factorization.

72345636122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841228372.

The product of its digits is 362880, while the sum is 41.

The spelling of 72345636122 in words is "seventy-two billion, three hundred forty-five million, six hundred thirty-six thousand, one hundred twenty-two".