72228998601 has 24 divisors (see below), whose sum is σ = 105924049920. Its totient is φ = 47419356096.

The previous prime is 72228998599. The next prime is 72228998609. The reversal of 72228998601 is 10689982227.

72228998601 is a `hidden beast` number, since 7 + 2 + 2 + 28 + 9 + 9 + 8 + 601 = 666.

It is not a de Polignac number, because 72228998601 - 2¹ = 72228998599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72228998609) 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 23 ways as a sum of consecutive naturals, for example, 340120 + ... + 510038.

It is an arithmetic number, because the mean of its divisors is an integer number (4413502080).

Almost surely, 2^72228998601 is an apocalyptic number.

It is an amenable number.

72228998601 is a deficient number, since it is larger than the sum of its proper divisors (33695051319).

72228998601 is a wasteful number, since it uses less digits than its factorization.

72228998601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170645 (or 170642 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 72228998601 in words is "seventy-two billion, two hundred twenty-eight million, nine hundred ninety-eight thousand, six hundred one".