65068521870 has 128 divisors (see below), whose sum is σ = 181088358912. Its totient is φ = 14788198400.

The previous prime is 65068521829. The next prime is 65068521883. The reversal of 65068521870 is 7812586056.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 1419205 + ... + 1464335.

It is an arithmetic number, because the mean of its divisors is an integer number (1414752804).

Almost surely, 2^65068521870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65068521870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90544179456).

65068521870 is an abundant number, since it is smaller than the sum of its proper divisors (116019837042).

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

65068521870 is a wasteful number, since it uses less digits than its factorization.

65068521870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45426.

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 65068521870 in words is "sixty-five billion, sixty-eight million, five hundred twenty-one thousand, eight hundred seventy".