1065601015665 has 16 divisors (see below), whose sum is σ = 1705525694208. Its totient is φ = 568132518656.

The previous prime is 1065601015631. The next prime is 1065601015697. The reversal of 1065601015665 is 5665101065601.

It is a cyclic number.

It is not a de Polignac number, because 1065601015665 - 2⁹ = 1065601015153 is a prime.

It is a super-3 number, since 3×1065601015665³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11704584 + ... + 11795273.

It is an arithmetic number, because the mean of its divisors is an integer number (106595355888).

Almost surely, 2^{1065601015665} is an apocalyptic number.

1065601015665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1065601015665 is a deficient number, since it is larger than the sum of its proper divisors (639924678543).

1065601015665 is a wasteful number, since it uses less digits than its factorization.

1065601015665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23502888.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 1065601015665 in words is "one trillion, sixty-five billion, six hundred one million, fifteen thousand, six hundred sixty-five".