72725436606 has 32 divisors (see below), whose sum is σ = 150224836608. Its totient is φ = 23447005920.

The previous prime is 72725436599. The next prime is 72725436607. The reversal of 72725436606 is 60663452727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72725436607) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 237696 + ... + 449388.

It is an arithmetic number, because the mean of its divisors is an integer number (4694526144).

Almost surely, 2^72725436606 is an apocalyptic number.

72725436606 is an abundant number, since it is smaller than the sum of its proper divisors (77499400002).

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

72725436606 is a wasteful number, since it uses less digits than its factorization.

72725436606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213576.

The product of its (nonzero) digits is 2540160, while the sum is 48.

The spelling of 72725436606 in words is "seventy-two billion, seven hundred twenty-five million, four hundred thirty-six thousand, six hundred six".