72340571212 has 36 divisors (see below), whose sum is σ = 158592796320. Its totient is φ = 28618246944.

The previous prime is 72340571209. The next prime is 72340571213. The reversal of 72340571212 is 21217504327.

It is not an unprimeable number, because it can be changed into a prime (72340571213) 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 11 ways as a sum of consecutive naturals, for example, 14193012 + ... + 14198107.

Almost surely, 2^72340571212 is an apocalyptic number.

It is an amenable number.

72340571212 is an abundant number, since it is smaller than the sum of its proper divisors (86252225108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72340571212 is a wasteful number, since it uses less digits than its factorization.

72340571212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28391150 (or 28391141 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The spelling of 72340571212 in words is "seventy-two billion, three hundred forty million, five hundred seventy-one thousand, two hundred twelve".