65691312093 has 40 divisors (see below), whose sum is σ = 113349741120. Its totient is φ = 37470971520.

The previous prime is 65691312041. The next prime is 65691312103. The reversal of 65691312093 is 39021319656.

It is not a de Polignac number, because 65691312093 - 2⁸ = 65691311837 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65691311093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2153313 + ... + 2183606.

It is an arithmetic number, because the mean of its divisors is an integer number (2833743528).

Almost surely, 2^65691312093 is an apocalyptic number.

It is an amenable number.

65691312093 is a deficient number, since it is larger than the sum of its proper divisors (47658429027).

65691312093 is a wasteful number, since it uses less digits than its factorization.

65691312093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4336959 (or 4336950 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The spelling of 65691312093 in words is "sixty-five billion, six hundred ninety-one million, three hundred twelve thousand, ninety-three".