72969357005 has 4 divisors (see below), whose sum is σ = 87563228412. Its totient is φ = 58375485600.

The previous prime is 72969357001. The next prime is 72969357007. The reversal of 72969357005 is 50075396927.

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 48514027081 + 24455329924 = 220259^2 + 156382^2 .

It is not a de Polignac number, because 72969357005 - 2² = 72969357001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72969357001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7296935696 + ... + 7296935705.

It is an arithmetic number, because the mean of its divisors is an integer number (21890807103).

Almost surely, 2^72969357005 is an apocalyptic number.

It is an amenable number.

72969357005 is a deficient number, since it is larger than the sum of its proper divisors (14593871407).

72969357005 is a wasteful number, since it uses less digits than its factorization.

72969357005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14593871406.

The product of its (nonzero) digits is 3572100, while the sum is 53.

The spelling of 72969357005 in words is "seventy-two billion, nine hundred sixty-nine million, three hundred fifty-seven thousand, five".