161146154265 has 64 divisors (see below), whose sum is σ = 277614501120. Its totient is φ = 79533342720.

The previous prime is 161146154263. The next prime is 161146154291. The reversal of 161146154265 is 562451641161.

It is not a de Polignac number, because 161146154265 - 2¹ = 161146154263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161146154263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3619017 + ... + 3663273.

It is an arithmetic number, because the mean of its divisors is an integer number (4337726580).

Almost surely, 2^161146154265 is an apocalyptic number.

161146154265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161146154265 is a deficient number, since it is larger than the sum of its proper divisors (116468346855).

161146154265 is a wasteful number, since it uses less digits than its factorization.

161146154265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44522.

The product of its digits is 172800, while the sum is 42.

The spelling of 161146154265 in words is "one hundred sixty-one billion, one hundred forty-six million, one hundred fifty-four thousand, two hundred sixty-five".