865330138461 has 8 divisors (see below), whose sum is σ = 1153778192320. Its totient is φ = 576884421792.

The previous prime is 865330138451. The next prime is 865330138469. The reversal of 865330138461 is 164831033568.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 865330138461 - 2⁶ = 865330138397 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 865330138461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865330138469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655296 + ... + 1469718.

It is an arithmetic number, because the mean of its divisors is an integer number (144222274040).

Almost surely, 2^865330138461 is an apocalyptic number.

It is an amenable number.

865330138461 is a deficient number, since it is larger than the sum of its proper divisors (288448053859).

865330138461 is a wasteful number, since it uses less digits than its factorization.

865330138461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168595.

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 865330138461 in words is "eight hundred sixty-five billion, three hundred thirty million, one hundred thirty-eight thousand, four hundred sixty-one".