72206366281 has 8 divisors (see below), whose sum is σ = 84751874240. Its totient is φ = 60218436528.

The previous prime is 72206366263. The next prime is 72206366299. The reversal of 72206366281 is 18266360227.

It is an interprime number because it is at equal distance from previous prime (72206366263) and next prime (72206366299).

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 72206366281 - 2¹⁵ = 72206333513 is a prime.

It is a super-2 number, since 2×72206366281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72206366201) 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, 139394271 + ... + 139394788.

It is an arithmetic number, because the mean of its divisors is an integer number (10593984280).

Almost surely, 2^72206366281 is an apocalyptic number.

It is an amenable number.

72206366281 is a deficient number, since it is larger than the sum of its proper divisors (12545507959).

72206366281 is a wasteful number, since it uses less digits than its factorization.

72206366281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278789103.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 72206366281 in words is "seventy-two billion, two hundred six million, three hundred sixty-six thousand, two hundred eighty-one".