72005844579 has 4 divisors (see below), whose sum is σ = 96007792776. Its totient is φ = 48003896384.

The previous prime is 72005844577. The next prime is 72005844583. The reversal of 72005844579 is 97544850027.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72005844579 - 2¹ = 72005844577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72005844577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12000974094 + ... + 12000974099.

It is an arithmetic number, because the mean of its divisors is an integer number (24001948194).

Almost surely, 2^72005844579 is an apocalyptic number.

72005844579 is a deficient number, since it is larger than the sum of its proper divisors (24001948197).

72005844579 is a wasteful number, since it uses less digits than its factorization.

72005844579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24001948196.

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 72005844579 in words is "seventy-two billion, five million, eight hundred forty-four thousand, five hundred seventy-nine".