163842778146 has 32 divisors (see below), whose sum is σ = 328160708928. Its totient is φ = 54535127040.

The previous prime is 163842778123. The next prime is 163842778199. The reversal of 163842778146 is 641877248361.

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, 13906210 + ... + 13917986.

It is an arithmetic number, because the mean of its divisors is an integer number (10255022154).

Almost surely, 2^163842778146 is an apocalyptic number.

163842778146 is an abundant number, since it is smaller than the sum of its proper divisors (164317930782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163842778146 is a wasteful number, since it uses less digits than its factorization.

163842778146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14946.

The product of its digits is 10838016, while the sum is 57.

The spelling of 163842778146 in words is "one hundred sixty-three billion, eight hundred forty-two million, seven hundred seventy-eight thousand, one hundred forty-six".