65031144109 has 8 divisors (see below), whose sum is σ = 65990364440. Its totient is φ = 64078516800.

The previous prime is 65031144053. The next prime is 65031144119. The reversal of 65031144109 is 90144113056.

It can be written as a sum of positive squares in 4 ways, for example, as 15232990084 + 49798154025 = 123422^2 + 223155^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 65031144109 - 2¹¹ = 65031142061 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 (65031144119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1628382 + ... + 1667839.

It is an arithmetic number, because the mean of its divisors is an integer number (8248795555).

Almost surely, 2^65031144109 is an apocalyptic number.

It is an amenable number.

65031144109 is a deficient number, since it is larger than the sum of its proper divisors (959220331).

65031144109 is a wasteful number, since it uses less digits than its factorization.

65031144109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3296511.

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 65031144109 in words is "sixty-five billion, thirty-one million, one hundred forty-four thousand, one hundred nine".