72536555207 has 4 divisors (see below), whose sum is σ = 72540141576. Its totient is φ = 72532968840.

The previous prime is 72536555159. The next prime is 72536555239. The reversal of 72536555207 is 70255563527.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72536555207 - 2¹² = 72536551111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72536555257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1762673 + ... + 1803354.

It is an arithmetic number, because the mean of its divisors is an integer number (18135035394).

Almost surely, 2^72536555207 is an apocalyptic number.

72536555207 is a deficient number, since it is larger than the sum of its proper divisors (3586369).

72536555207 is a wasteful number, since it uses less digits than its factorization.

72536555207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3586368.

The product of its (nonzero) digits is 2205000, while the sum is 47.

The spelling of 72536555207 in words is "seventy-two billion, five hundred thirty-six million, five hundred fifty-five thousand, two hundred seven".