72228674277 has 12 divisors (see below), whose sum is σ = 104424397740. Its totient is φ = 48109023168.

The previous prime is 72228674257. The next prime is 72228674279. The reversal of 72228674277 is 77247682227.

72228674277 is a `hidden beast` number, since 7 + 22 + 286 + 74 + 277 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 35854937316 + 36373736961 = 189354^2 + 190719^2 .

It is not a de Polignac number, because 72228674277 - 2⁶ = 72228674213 is a prime.

It is a super-2 number, since 2×72228674277² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72228674279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3608328 + ... + 3628289.

It is an arithmetic number, because the mean of its divisors is an integer number (8702033145).

Almost surely, 2^72228674277 is an apocalyptic number.

It is an amenable number.

72228674277 is a deficient number, since it is larger than the sum of its proper divisors (32195723463).

72228674277 is a wasteful number, since it uses less digits than its factorization.

72228674277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7237732 (or 7237729 counting only the distinct ones).

The product of its digits is 7375872, while the sum is 54.

The spelling of 72228674277 in words is "seventy-two billion, two hundred twenty-eight million, six hundred seventy-four thousand, two hundred seventy-seven".