72852465641 has 12 divisors (see below), whose sum is σ = 75324779460. Its totient is φ = 70453504800.

The previous prime is 72852465593. The next prime is 72852465649. The reversal of 72852465641 is 14656425827.

It can be written as a sum of positive squares in 2 ways, for example, as 31081690000 + 41770775641 = 176300^2 + 204379^2 .

It is not a de Polignac number, because 72852465641 - 2⁶ = 72852465577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72852465641.

It is not an unprimeable number, because it can be changed into a prime (72852465649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8306 + ... + 381803.

It is an arithmetic number, because the mean of its divisors is an integer number (6277064955).

Almost surely, 2^72852465641 is an apocalyptic number.

It is an amenable number.

72852465641 is a deficient number, since it is larger than the sum of its proper divisors (2472313819).

72852465641 is a wasteful number, since it uses less digits than its factorization.

72852465641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390296 (or 390253 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 50.

The spelling of 72852465641 in words is "seventy-two billion, eight hundred fifty-two million, four hundred sixty-five thousand, six hundred forty-one".