873845015965 has 4 divisors (see below), whose sum is σ = 1048614019164. Its totient is φ = 699076012768.

The previous prime is 873845015963. The next prime is 873845015969. The reversal of 873845015965 is 569510548378.

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 671778583641 + 202066432324 = 819621^2 + 449518^2 .

It is a cyclic number.

It is not a de Polignac number, because 873845015965 - 2¹ = 873845015963 is a prime.

It is a super-2 number, since 2×873845015965² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (873845015963) 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, 87384501592 + ... + 87384501601.

It is an arithmetic number, because the mean of its divisors is an integer number (262153504791).

Almost surely, 2^873845015965 is an apocalyptic number.

It is an amenable number.

873845015965 is a deficient number, since it is larger than the sum of its proper divisors (174769003199).

873845015965 is a wasteful number, since it uses less digits than its factorization.

873845015965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174769003198.

The product of its (nonzero) digits is 36288000, while the sum is 61.

The spelling of 873845015965 in words is "eight hundred seventy-three billion, eight hundred forty-five million, fifteen thousand, nine hundred sixty-five".