865164450860 has 48 divisors (see below), whose sum is σ = 1858630620000. Its totient is φ = 338193667584.

The previous prime is 865164450851. The next prime is 865164450869. The reversal of 865164450860 is 68054461568.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (865164450851) and next prime (865164450869).

It is not an unprimeable number, because it can be changed into a prime (865164450869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2559110 + ... + 2877389.

It is an arithmetic number, because the mean of its divisors is an integer number (38721471250).

Almost surely, 2^865164450860 is an apocalyptic number.

It is an amenable number.

865164450860 is an abundant number, since it is smaller than the sum of its proper divisors (993466169140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

865164450860 is a wasteful number, since it uses less digits than its factorization.

865164450860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5436690 (or 5436688 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 53.

The spelling of 865164450860 in words is "eight hundred sixty-five billion, one hundred sixty-four million, four hundred fifty thousand, eight hundred sixty".