165655316211404 has 6 divisors (see below), whose sum is σ = 289896803369964. Its totient is φ = 82827658105700.

The previous prime is 165655316211401. The next prime is 165655316211547. The reversal of 165655316211404 is 404112613556561.

It is not an unprimeable number, because it can be changed into a prime (165655316211401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20706914526422 + ... + 20706914526429.

It is an arithmetic number, because the mean of its divisors is an integer number (48316133894994).

Almost surely, 2^{165655316211404} is an apocalyptic number.

It is an amenable number.

165655316211404 is a deficient number, since it is larger than the sum of its proper divisors (124241487158560).

165655316211404 is a wasteful number, since it uses less digits than its factorization.

165655316211404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41413829052855 (or 41413829052853 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 50.

Adding to 165655316211404 its reverse (404112613556561), we get a palindrome (569767929767965).

The spelling of 165655316211404 in words is "one hundred sixty-five trillion, six hundred fifty-five billion, three hundred sixteen million, two hundred eleven thousand, four hundred four".