72085856240 has 20 divisors (see below), whose sum is σ = 167599615944. Its totient is φ = 28834342464.

The previous prime is 72085856197. The next prime is 72085856251. The reversal of 72085856240 is 4265858027.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 450536522 + ... + 450536681.

Almost surely, 2^72085856240 is an apocalyptic number.

It is an amenable number.

72085856240 is an abundant number, since it is smaller than the sum of its proper divisors (95513759704).

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

72085856240 is a wasteful number, since it uses less digits than its factorization.

72085856240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901073216 (or 901073210 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 47.

The spelling of 72085856240 in words is "seventy-two billion, eighty-five million, eight hundred fifty-six thousand, two hundred forty".