65172851889 has 16 divisors (see below), whose sum is σ = 89148827712. Its totient is φ = 42337064448.

The previous prime is 65172851879. The next prime is 65172851893. The reversal of 65172851889 is 98815827156.

It is not a de Polignac number, because 65172851889 - 2⁵ = 65172851857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65172851869) 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 15 ways as a sum of consecutive naturals, for example, 1774552 + ... + 1810905.

It is an arithmetic number, because the mean of its divisors is an integer number (5571801732).

Almost surely, 2^65172851889 is an apocalyptic number.

It is an amenable number.

65172851889 is a deficient number, since it is larger than the sum of its proper divisors (23975975823).

65172851889 is a wasteful number, since it uses less digits than its factorization.

65172851889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3585616.

The product of its digits is 9676800, while the sum is 60.

The spelling of 65172851889 in words is "sixty-five billion, one hundred seventy-two million, eight hundred fifty-one thousand, eight hundred eighty-nine".