72220208081 has 8 divisors (see below), whose sum is σ = 86125962624. Its totient is φ = 59211599040.

The previous prime is 72220208063. The next prime is 72220208101. The reversal of 72220208081 is 18080202227.

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 72220208081 - 2²⁶ = 72153099217 is a prime.

It is a super-2 number, since 2×72220208081² (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 (72220208041) 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 7 ways as a sum of consecutive naturals, for example, 224286200 + ... + 224286521.

It is an arithmetic number, because the mean of its divisors is an integer number (10765745328).

Almost surely, 2^72220208081 is an apocalyptic number.

It is an amenable number.

72220208081 is a deficient number, since it is larger than the sum of its proper divisors (13905754543).

72220208081 is a wasteful number, since it uses less digits than its factorization.

72220208081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448572751.

The product of its (nonzero) digits is 7168, while the sum is 32.

The spelling of 72220208081 in words is "seventy-two billion, two hundred twenty million, two hundred eight thousand, eighty-one".