72152254542205 has 4 divisors (see below), whose sum is σ = 86582705450652. Its totient is φ = 57721803633760.

The previous prime is 72152254542187. The next prime is 72152254542227. The reversal of 72152254542205 is 50224545225127.

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

It can be written as a sum of positive squares in 2 ways, for example, as 49174679401156 + 22977575141049 = 7012466^2 + 4793493^2 .

It is not a de Polignac number, because 72152254542205 - 2³⁷ = 72014815588733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7215225454216 + ... + 7215225454225.

It is an arithmetic number, because the mean of its divisors is an integer number (21645676362663).

Almost surely, 2^{72152254542205} is an apocalyptic number.

It is an amenable number.

72152254542205 is a deficient number, since it is larger than the sum of its proper divisors (14430450908447).

72152254542205 is a wasteful number, since it uses less digits than its factorization.

72152254542205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14430450908446.

The product of its (nonzero) digits is 2240000, while the sum is 46.

The spelling of 72152254542205 in words is "seventy-two trillion, one hundred fifty-two billion, two hundred fifty-four million, five hundred forty-two thousand, two hundred five".