86754321640 has 72 divisors (see below), whose sum is σ = 227100293190. Its totient is φ = 29739868032.

The previous prime is 86754321617. The next prime is 86754321649. The reversal of 86754321640 is 4612345768.

It can be written as a sum of positive squares in 3 ways, for example, as 18354288484 + 68400033156 = 135478^2 + 261534^2 .

It is not an unprimeable number, because it can be changed into a prime (86754321649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13036554 + ... + 13043206.

Almost surely, 2^86754321640 is an apocalyptic number.

It is an amenable number.

86754321640 is an abundant number, since it is smaller than the sum of its proper divisors (140345971550).

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

86754321640 is an frugal number, since it uses more digits than its factorization.

86754321640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13331 (or 6667 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 86754321640 in words is "eighty-six billion, seven hundred fifty-four million, three hundred twenty-one thousand, six hundred forty".