65364678909 has 12 divisors (see below), whose sum is σ = 94419534300. Its totient is φ = 43574658624.

The previous prime is 65364678889. The next prime is 65364678913. The reversal of 65364678909 is 90987646356.

65364678909 is a `hidden beast` number, since 6 + 536 + 4 + 6 + 7 + 8 + 90 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 39921238809 + 25443440100 = 199803^2 + 159510^2 .

It is not a de Polignac number, because 65364678909 - 2⁷ = 65364678781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65364678919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103857 + ... + 376185.

It is an arithmetic number, because the mean of its divisors is an integer number (7868294525).

Almost surely, 2^65364678909 is an apocalyptic number.

It is an amenable number.

65364678909 is a deficient number, since it is larger than the sum of its proper divisors (29054855391).

65364678909 is a wasteful number, since it uses less digits than its factorization.

65364678909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299004 (or 299001 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 63.

The spelling of 65364678909 in words is "sixty-five billion, three hundred sixty-four million, six hundred seventy-eight thousand, nine hundred nine".