161270551814 has 4 divisors (see below), whose sum is σ = 241905827724. Its totient is φ = 80635275906.

The previous prime is 161270551811. The next prime is 161270551847. The reversal of 161270551814 is 418155072161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 418155072161 = 313 ⋅1335958697.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161270551811) 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 as a sum of consecutive naturals, namely, 40317637952 + ... + 40317637955.

It is an arithmetic number, because the mean of its divisors is an integer number (60476456931).

Almost surely, 2^161270551814 is an apocalyptic number.

161270551814 is a deficient number, since it is larger than the sum of its proper divisors (80635275910).

161270551814 is an equidigital number, since it uses as much as digits as its factorization.

161270551814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80635275909.

The product of its (nonzero) digits is 67200, while the sum is 41.

The spelling of 161270551814 in words is "one hundred sixty-one billion, two hundred seventy million, five hundred fifty-one thousand, eight hundred fourteen".