65541375901 has 16 divisors (see below), whose sum is σ = 69886465200. Its totient is φ = 61251240960.

The previous prime is 65541375883. The next prime is 65541375929. The reversal of 65541375901 is 10957314556.

It can be written as a sum of positive squares in 8 ways, for example, as 5256395001 + 60284980900 = 72501^2 + 245530^2 .

It is a cyclic number.

It is not a de Polignac number, because 65541375901 - 2⁷ = 65541375773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65541375971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4318875 + ... + 4334023.

It is an arithmetic number, because the mean of its divisors is an integer number (4367904075).

Almost surely, 2^65541375901 is an apocalyptic number.

It is an amenable number.

65541375901 is a deficient number, since it is larger than the sum of its proper divisors (4345089299).

65541375901 is a wasteful number, since it uses less digits than its factorization.

65541375901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16944.

The product of its (nonzero) digits is 567000, while the sum is 46.

The spelling of 65541375901 in words is "sixty-five billion, five hundred forty-one million, three hundred seventy-five thousand, nine hundred one".