72505356652 has 12 divisors (see below), whose sum is σ = 126909062280. Its totient is φ = 36245624576.

The previous prime is 72505356647. The next prime is 72505356667. The reversal of 72505356652 is 25665350527.

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, 1740277 + ... + 1781452.

It is an arithmetic number, because the mean of its divisors is an integer number (10575755190).

Almost surely, 2^72505356652 is an apocalyptic number.

It is an amenable number.

72505356652 is a deficient number, since it is larger than the sum of its proper divisors (54403705628).

72505356652 is a wasteful number, since it uses less digits than its factorization.

72505356652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3526880 (or 3526878 counting only the distinct ones).

The product of its (nonzero) digits is 1890000, while the sum is 46.

The spelling of 72505356652 in words is "seventy-two billion, five hundred five million, three hundred fifty-six thousand, six hundred fifty-two".