65665207105215 has 32 divisors (see below), whose sum is σ = 108454426675200. Its totient is φ = 33891431256960.

The previous prime is 65665207105181. The next prime is 65665207105247. The reversal of 65665207105215 is 51250170256656.

It is not a de Polignac number, because 65665207105215 - 2⁶ = 65665207105151 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60816481 + ... + 61886789.

It is an arithmetic number, because the mean of its divisors is an integer number (3389200833600).

Almost surely, 2^{65665207105215} is an apocalyptic number.

65665207105215 is a deficient number, since it is larger than the sum of its proper divisors (42789219569985).

65665207105215 is a wasteful number, since it uses less digits than its factorization.

65665207105215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202287.

The product of its (nonzero) digits is 3780000, while the sum is 51.

The spelling of 65665207105215 in words is "sixty-five trillion, six hundred sixty-five billion, two hundred seven million, one hundred five thousand, two hundred fifteen".