72051550201 has 8 divisors (see below), whose sum is σ = 73310096520. Its totient is φ = 70800342912.

The previous prime is 72051550187. The next prime is 72051550213. The reversal of 72051550201 is 10205515027.

It can be written as a sum of positive squares in 4 ways, for example, as 16874010000 + 55177540201 = 129900^2 + 234899^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 72051550201 - 2¹³ = 72051542009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72051550201.

It is not an unprimeable number, because it can be changed into a prime (72051550271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1814950 + ... + 1854223.

It is an arithmetic number, because the mean of its divisors is an integer number (9163762065).

Almost surely, 2^72051550201 is an apocalyptic number.

It is an amenable number.

72051550201 is a deficient number, since it is larger than the sum of its proper divisors (1258546319).

72051550201 is a wasteful number, since it uses less digits than its factorization.

72051550201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3669515.

The product of its (nonzero) digits is 3500, while the sum is 28.

The spelling of 72051550201 in words is "seventy-two billion, fifty-one million, five hundred fifty thousand, two hundred one".