65164539089 has 16 divisors (see below), whose sum is σ = 71198453760. Its totient is φ = 59282798400.

The previous prime is 65164539079. The next prime is 65164539091. The reversal of 65164539089 is 98093546156.

It is a cyclic number.

It is not a de Polignac number, because 65164539089 - 2⁸ = 65164538833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65164539019) 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, 118607 + ... + 379995.

It is an arithmetic number, because the mean of its divisors is an integer number (4449903360).

Almost surely, 2^65164539089 is an apocalyptic number.

It is an amenable number.

65164539089 is a deficient number, since it is larger than the sum of its proper divisors (6033914671).

65164539089 is a wasteful number, since it uses less digits than its factorization.

65164539089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261680.

The product of its (nonzero) digits is 6998400, while the sum is 56.

The spelling of 65164539089 in words is "sixty-five billion, one hundred sixty-four million, five hundred thirty-nine thousand, eighty-nine".