72043620648 has 16 divisors (see below), whose sum is σ = 180109051680. Its totient is φ = 24014540208.

The previous prime is 72043620643. The next prime is 72043620673. The reversal of 72043620648 is 84602634027.

It is not an unprimeable number, because it can be changed into a prime (72043620643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1500908740 + ... + 1500908787.

It is an arithmetic number, because the mean of its divisors is an integer number (11256815730).

Almost surely, 2^72043620648 is an apocalyptic number.

It is an amenable number.

72043620648 is an abundant number, since it is smaller than the sum of its proper divisors (108065431032).

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

72043620648 is a wasteful number, since it uses less digits than its factorization.

72043620648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3001817536 (or 3001817532 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 42.

The spelling of 72043620648 in words is "seventy-two billion, forty-three million, six hundred twenty thousand, six hundred forty-eight".