65861590911089 has 16 divisors (see below), whose sum is σ = 68997841900800. Its totient is φ = 62808561039744.

The previous prime is 65861590911079. The next prime is 65861590911113. The reversal of 65861590911089 is 98011909516856.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 65861590911089 - 2⁴ = 65861590911073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65861590911079) 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, 81833819 + ... + 82634720.

It is an arithmetic number, because the mean of its divisors is an integer number (4312365118800).

Almost surely, 2^{65861590911089} is an apocalyptic number.

It is an amenable number.

65861590911089 is a deficient number, since it is larger than the sum of its proper divisors (3136250989711).

65861590911089 is a wasteful number, since it uses less digits than its factorization.

65861590911089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164468792.

The product of its (nonzero) digits is 41990400, while the sum is 68.

The spelling of 65861590911089 in words is "sixty-five trillion, eight hundred sixty-one billion, five hundred ninety million, nine hundred eleven thousand, eighty-nine".