1355641164665 has 16 divisors (see below), whose sum is σ = 1648362016512. Its totient is φ = 1070196731904.

The previous prime is 1355641164637. The next prime is 1355641164809. The reversal of 1355641164665 is 5664611465531.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1355641164665 - 2³⁴ = 1338461295481 is a prime.

It is a Duffinian number.

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, 4792289 + ... + 5067278.

It is an arithmetic number, because the mean of its divisors is an integer number (103022626032).

Almost surely, 2^{1355641164665} is an apocalyptic number.

It is an amenable number.

1355641164665 is a deficient number, since it is larger than the sum of its proper divisors (292720851847).

1355641164665 is a wasteful number, since it uses less digits than its factorization.

1355641164665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9859936.

The product of its digits is 7776000, while the sum is 53.

The spelling of 1355641164665 in words is "one trillion, three hundred fifty-five billion, six hundred forty-one million, one hundred sixty-four thousand, six hundred sixty-five".