72356557228 has 12 divisors (see below), whose sum is σ = 126627431112. Its totient is φ = 36177291200.

The previous prime is 72356557183. The next prime is 72356557237. The reversal of 72356557228 is 82275565327.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 67498 + ... + 386353.

It is an arithmetic number, because the mean of its divisors is an integer number (10552285926).

Almost surely, 2^72356557228 is an apocalyptic number.

It is an amenable number.

72356557228 is a deficient number, since it is larger than the sum of its proper divisors (54270873884).

72356557228 is a wasteful number, since it uses less digits than its factorization.

72356557228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493712 (or 493710 counting only the distinct ones).

The product of its digits is 7056000, while the sum is 52.

The spelling of 72356557228 in words is "seventy-two billion, three hundred fifty-six million, five hundred fifty-seven thousand, two hundred twenty-eight".