161314477858 has 64 divisors (see below), whose sum is σ = 258059934720. Its totient is φ = 75510388800.

The previous prime is 161314477811. The next prime is 161314477867. The reversal of 161314477858 is 858774413161.

It is a happy number.

161314477858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 161314477799 and 161314477808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106759323 + ... + 106760833.

It is an arithmetic number, because the mean of its divisors is an integer number (4032186480).

Almost surely, 2^161314477858 is an apocalyptic number.

161314477858 is a deficient number, since it is larger than the sum of its proper divisors (96745456862).

161314477858 is a wasteful number, since it uses less digits than its factorization.

161314477858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023.

The product of its digits is 4515840, while the sum is 55.

The spelling of 161314477858 in words is "one hundred sixty-one billion, three hundred fourteen million, four hundred seventy-seven thousand, eight hundred fifty-eight".