85665201215 has 8 divisors (see below), whose sum is σ = 112143536208. Its totient is φ = 62301964480.

The previous prime is 85665201173. The next prime is 85665201283. The reversal of 85665201215 is 51210256658.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85665201215 - 2⁶ = 85665201151 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778774502 + ... + 778774611.

It is an arithmetic number, because the mean of its divisors is an integer number (14017942026).

Almost surely, 2^85665201215 is an apocalyptic number.

85665201215 is a deficient number, since it is larger than the sum of its proper divisors (26478334993).

85665201215 is a wasteful number, since it uses less digits than its factorization.

85665201215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557549129.

The product of its (nonzero) digits is 144000, while the sum is 41.

The spelling of 85665201215 in words is "eighty-five billion, six hundred sixty-five million, two hundred one thousand, two hundred fifteen".