65375138685811 has 16 divisors (see below), whose sum is σ = 69814113559200. Its totient is φ = 61003621393920.

The previous prime is 65375138685757. The next prime is 65375138685817. The reversal of 65375138685811 is 11858683157356.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 65375138685811 - 2⁹ = 65375138685299 is a prime.

It is a super-3 number, since 3×65375138685811³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65375138685817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22483041 + ... + 25223746.

It is an arithmetic number, because the mean of its divisors is an integer number (4363382097450).

Almost surely, 2^{65375138685811} is an apocalyptic number.

65375138685811 is a deficient number, since it is larger than the sum of its proper divisors (4438974873389).

65375138685811 is a wasteful number, since it uses less digits than its factorization.

65375138685811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47707494.

The product of its digits is 145152000, while the sum is 67.

The spelling of 65375138685811 in words is "sixty-five trillion, three hundred seventy-five billion, one hundred thirty-eight million, six hundred eighty-five thousand, eight hundred eleven".