65161120133255 has 4 divisors (see below), whose sum is σ = 78193344159912. Its totient is φ = 52128896106600.

The previous prime is 65161120133173. The next prime is 65161120133327. The reversal of 65161120133255 is 55233102116156.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 65161120133255 - 2²² = 65161115938951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6516112013321 + ... + 6516112013330.

It is an arithmetic number, because the mean of its divisors is an integer number (19548336039978).

Almost surely, 2^{65161120133255} is an apocalyptic number.

65161120133255 is a deficient number, since it is larger than the sum of its proper divisors (13032224026657).

65161120133255 is a wasteful number, since it uses less digits than its factorization.

65161120133255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13032224026656.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 65161120133255 in words is "sixty-five trillion, one hundred sixty-one billion, one hundred twenty million, one hundred thirty-three thousand, two hundred fifty-five".