85644513484 has 12 divisors (see below), whose sum is σ = 149880699864. Its totient is φ = 42821456384.

The previous prime is 85644513473. The next prime is 85644513491. The reversal of 85644513484 is 48431544658.

It is a super-2 number, since 2×85644513484² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 86187 + ... + 422749.

It is an arithmetic number, because the mean of its divisors is an integer number (12490058322).

Almost surely, 2^85644513484 is an apocalyptic number.

It is an amenable number.

85644513484 is a deficient number, since it is larger than the sum of its proper divisors (64236186380).

85644513484 is a wasteful number, since it uses less digits than its factorization.

85644513484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400184 (or 400182 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 52.

The spelling of 85644513484 in words is "eighty-five billion, six hundred forty-four million, five hundred thirteen thousand, four hundred eighty-four".