72271816855 has 8 divisors (see below), whose sum is σ = 99115634592. Its totient is φ = 49557817248.

The previous prime is 72271816783. The next prime is 72271816867. The reversal of 72271816855 is 55861817227.

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 72271816855 - 2²¹ = 72269719703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1032454492 + ... + 1032454561.

It is an arithmetic number, because the mean of its divisors is an integer number (12389454324).

Almost surely, 2^72271816855 is an apocalyptic number.

72271816855 is a deficient number, since it is larger than the sum of its proper divisors (26843817737).

72271816855 is a wasteful number, since it uses less digits than its factorization.

72271816855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064909065.

The product of its digits is 1881600, while the sum is 52.

The spelling of 72271816855 in words is "seventy-two billion, two hundred seventy-one million, eight hundred sixteen thousand, eight hundred fifty-five".