65939910111 has 8 divisors (see below), whose sum is σ = 97688755760. Its totient is φ = 43959940056.

The previous prime is 65939910107. The next prime is 65939910133. The reversal of 65939910111 is 11101993956.

It is not a de Polignac number, because 65939910111 - 2² = 65939910107 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 (65939910011) 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 7 ways as a sum of consecutive naturals, for example, 1221109420 + ... + 1221109473.

It is an arithmetic number, because the mean of its divisors is an integer number (12211094470).

Almost surely, 2^65939910111 is an apocalyptic number.

65939910111 is a deficient number, since it is larger than the sum of its proper divisors (31748845649).

65939910111 is a wasteful number, since it uses less digits than its factorization.

65939910111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442218902 (or 2442218896 counting only the distinct ones).

The product of its (nonzero) digits is 65610, while the sum is 45.

The spelling of 65939910111 in words is "sixty-five billion, nine hundred thirty-nine million, nine hundred ten thousand, one hundred eleven".