72151465505 has 16 divisors (see below), whose sum is σ = 100627712640. Its totient is φ = 48636724992.

The previous prime is 72151465493. The next prime is 72151465531. The reversal of 72151465505 is 50556415127.

It is a cyclic number.

It is not a de Polignac number, because 72151465505 - 2⁸ = 72151465249 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 17468024 + ... + 17472153.

It is an arithmetic number, because the mean of its divisors is an integer number (6289232040).

Almost surely, 2^72151465505 is an apocalyptic number.

It is an amenable number.

72151465505 is a deficient number, since it is larger than the sum of its proper divisors (28476247135).

72151465505 is a wasteful number, since it uses less digits than its factorization.

72151465505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34940248.

The product of its (nonzero) digits is 210000, while the sum is 41.

The spelling of 72151465505 in words is "seventy-two billion, one hundred fifty-one million, four hundred sixty-five thousand, five hundred five".