65115705685 has 16 divisors (see below), whose sum is σ = 81981752832. Its totient is φ = 49585723200.

The previous prime is 65115705673. The next prime is 65115705701. The reversal of 65115705685 is 58650751156.

65115705685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 65115705685 - 2⁵ = 65115705653 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3433999 + ... + 3452908.

It is an arithmetic number, because the mean of its divisors is an integer number (5123859552).

Almost surely, 2^65115705685 is an apocalyptic number.

It is an amenable number.

65115705685 is a deficient number, since it is larger than the sum of its proper divisors (16866047147).

65115705685 is a wasteful number, since it uses less digits than its factorization.

65115705685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6887004.

The product of its (nonzero) digits is 1260000, while the sum is 49.

The spelling of 65115705685 in words is "sixty-five billion, one hundred fifteen million, seven hundred five thousand, six hundred eighty-five".