84631331465 has 16 divisors (see below), whose sum is σ = 102329005968. Its totient is φ = 67191085056.

The previous prime is 84631331459. The next prime is 84631331503. The reversal of 84631331465 is 56413313648.

It can be written as a sum of positive squares in 8 ways, for example, as 23075736649 + 61555594816 = 151907^2 + 248104^2 .

It is a cyclic number.

It is not a de Polignac number, because 84631331465 - 2⁶ = 84631331401 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2581919 + ... + 2614491.

It is an arithmetic number, because the mean of its divisors is an integer number (6395562873).

Almost surely, 2^84631331465 is an apocalyptic number.

It is an amenable number.

84631331465 is a deficient number, since it is larger than the sum of its proper divisors (17697674503).

84631331465 is a wasteful number, since it uses less digits than its factorization.

84631331465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36508.

The product of its digits is 622080, while the sum is 44.

It can be divided in two parts, 846313 and 31465, that added together give a palindrome (877778).

The spelling of 84631331465 in words is "eighty-four billion, six hundred thirty-one million, three hundred thirty-one thousand, four hundred sixty-five".