72100003201 has 4 divisors (see below), whose sum is σ = 72618708400. Its totient is φ = 71581298004.

The previous prime is 72100003177. The next prime is 72100003231. The reversal of 72100003201 is 10230000127.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72100003201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72100003231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259352391 + ... + 259352668.

It is an arithmetic number, because the mean of its divisors is an integer number (18154677100).

Almost surely, 2^72100003201 is an apocalyptic number.

It is an amenable number.

72100003201 is a deficient number, since it is larger than the sum of its proper divisors (518705199).

72100003201 is a wasteful number, since it uses less digits than its factorization.

72100003201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518705198.

The product of its (nonzero) digits is 84, while the sum is 16.

Adding to 72100003201 its reverse (10230000127), we get a palindrome (82330003328).

The spelling of 72100003201 in words is "seventy-two billion, one hundred million, three thousand, two hundred one".