72279297227 has 32 divisors (see below), whose sum is σ = 76403712000. Its totient is φ = 68313012768.

The previous prime is 72279297217. The next prime is 72279297247.

72279297227 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 72279297227 - 2⁶ = 72279297163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72279297217) 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 31 ways as a sum of consecutive naturals, for example, 51664274 + ... + 51665672.

It is an arithmetic number, because the mean of its divisors is an integer number (2387616000).

Almost surely, 2^72279297227 is an apocalyptic number.

72279297227 is a deficient number, since it is larger than the sum of its proper divisors (4124414773).

72279297227 is a wasteful number, since it uses less digits than its factorization.

72279297227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815.

The product of its digits is 6223392, while the sum is 56.

The spelling of 72279297227 in words is "seventy-two billion, two hundred seventy-nine million, two hundred ninety-seven thousand, two hundred twenty-seven".