72050368385 has 4 divisors (see below), whose sum is σ = 86460442068. Its totient is φ = 57640294704.

The previous prime is 72050368381. The next prime is 72050368387. The reversal of 72050368385 is 58386305027.

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 8194594576 + 63855773809 = 90524^2 + 252697^2 .

It is a cyclic number.

It is not a de Polignac number, because 72050368385 - 2² = 72050368381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72050368381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7205036834 + ... + 7205036843.

It is an arithmetic number, because the mean of its divisors is an integer number (21615110517).

Almost surely, 2^72050368385 is an apocalyptic number.

It is an amenable number.

72050368385 is a deficient number, since it is larger than the sum of its proper divisors (14410073683).

72050368385 is a wasteful number, since it uses less digits than its factorization.

72050368385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14410073682.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 72050368385 in words is "seventy-two billion, fifty million, three hundred sixty-eight thousand, three hundred eighty-five".