72805558522 has 16 divisors (see below), whose sum is σ = 109807488000. Its totient is φ = 36203230800.

The previous prime is 72805558477. The next prime is 72805558601. The reversal of 72805558522 is 22585550827.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 850272 + ... + 931972.

It is an arithmetic number, because the mean of its divisors is an integer number (6862968000).

Almost surely, 2^72805558522 is an apocalyptic number.

72805558522 is a deficient number, since it is larger than the sum of its proper divisors (37001929478).

72805558522 is a wasteful number, since it uses less digits than its factorization.

72805558522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84141.

The product of its (nonzero) digits is 2240000, while the sum is 49.

The spelling of 72805558522 in words is "seventy-two billion, eight hundred five million, five hundred fifty-eight thousand, five hundred twenty-two".