1165655616065 has 16 divisors (see below), whose sum is σ = 1400944923840. Its totient is φ = 931086187200.

The previous prime is 1165655616019. The next prime is 1165655616101. The reversal of 1165655616065 is 5606165565611.

It is not a de Polignac number, because 1165655616065 - 2²⁰ = 1165654567489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1165655615998 and 1165655616016.

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, 21592487 + ... + 21646403.

It is an arithmetic number, because the mean of its divisors is an integer number (87559057740).

Almost surely, 2^{1165655616065} is an apocalyptic number.

It is an amenable number.

1165655616065 is a deficient number, since it is larger than the sum of its proper divisors (235289307775).

1165655616065 is an equidigital number, since it uses as much as digits as its factorization.

1165655616065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60512.

The product of its (nonzero) digits is 4860000, while the sum is 53.

The spelling of 1165655616065 in words is "one trillion, one hundred sixty-five billion, six hundred fifty-five million, six hundred sixteen thousand, sixty-five".