85644916145 has 8 divisors (see below), whose sum is σ = 102783093480. Its totient is φ = 68509803520.

The previous prime is 85644916121. The next prime is 85644916153. The reversal of 85644916145 is 54161944658.

It can be written as a sum of positive squares in 4 ways, for example, as 52312380961 + 33332535184 = 228719^2 + 182572^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85644916145 - 2¹⁰ = 85644915121 is a prime.

It is a super-2 number, since 2×85644916145² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704240 + ... + 816849.

It is an arithmetic number, because the mean of its divisors is an integer number (12847886685).

Almost surely, 2^85644916145 is an apocalyptic number.

It is an amenable number.

85644916145 is a deficient number, since it is larger than the sum of its proper divisors (17138177335).

85644916145 is a wasteful number, since it uses less digits than its factorization.

85644916145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532355.

The product of its digits is 4147200, while the sum is 53.

The spelling of 85644916145 in words is "eighty-five billion, six hundred forty-four million, nine hundred sixteen thousand, one hundred forty-five".