65165256155 has 16 divisors (see below), whose sum is σ = 79809668064. Its totient is φ = 51061320960.

The previous prime is 65165256119. The next prime is 65165256173. The reversal of 65165256155 is 55165256156.

It is a happy number.

It is not a de Polignac number, because 65165256155 - 2¹² = 65165252059 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, 53906 + ... + 365015.

It is an arithmetic number, because the mean of its divisors is an integer number (4988104254).

Almost surely, 2^65165256155 is an apocalyptic number.

65165256155 is a deficient number, since it is larger than the sum of its proper divisors (14644411909).

65165256155 is a wasteful number, since it uses less digits than its factorization.

65165256155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419566.

The product of its digits is 1350000, while the sum is 47.

Subtracting from 65165256155 its reverse (55165256156), we obtain a palindrome (9999999999).

The spelling of 65165256155 in words is "sixty-five billion, one hundred sixty-five million, two hundred fifty-six thousand, one hundred fifty-five".