72284703778 has 16 divisors (see below), whose sum is σ = 127913946624. Its totient is φ = 29979830880.

The previous prime is 72284703773. The next prime is 72284703779. The reversal of 72284703778 is 87730748227.

It is not an unprimeable number, because it can be changed into a prime (72284703773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83276875 + ... + 83277742.

It is an arithmetic number, because the mean of its divisors is an integer number (7994621664).

Almost surely, 2^72284703778 is an apocalyptic number.

72284703778 is a deficient number, since it is larger than the sum of its proper divisors (55629242846).

72284703778 is a wasteful number, since it uses less digits than its factorization.

72284703778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166554657.

The product of its (nonzero) digits is 7375872, while the sum is 55.

The spelling of 72284703778 in words is "seventy-two billion, two hundred eighty-four million, seven hundred three thousand, seven hundred seventy-eight".