72369441871 has 4 divisors (see below), whose sum is σ = 72630703672. Its totient is φ = 72108180072.

The previous prime is 72369441853. The next prime is 72369441901. The reversal of 72369441871 is 17814496327.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17814496327 = 2267 ⋅7858181.

It is a cyclic number.

It is not a de Polignac number, because 72369441871 - 2⁵ = 72369441839 is a prime.

It is a super-2 number, since 2×72369441871² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72369441271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130630485 + ... + 130631038.

It is an arithmetic number, because the mean of its divisors is an integer number (18157675918).

Almost surely, 2^72369441871 is an apocalyptic number.

72369441871 is a deficient number, since it is larger than the sum of its proper divisors (261261801).

72369441871 is a wasteful number, since it uses less digits than its factorization.

72369441871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261261800.

The product of its digits is 2032128, while the sum is 52.

The spelling of 72369441871 in words is "seventy-two billion, three hundred sixty-nine million, four hundred forty-one thousand, eight hundred seventy-one".