163040029278 has 16 divisors (see below), whose sum is σ = 372662924160. Its totient is φ = 46582865496.

The previous prime is 163040029267. The next prime is 163040029331. The reversal of 163040029278 is 872920040361.

It is a super-2 number, since 2×163040029278² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 3881905459 = 163040029278 / (1 + 6 + 3 + 0 + 4 + 0 + 0 + 2 + 9 + 2 + 7 + 8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1940952688 + ... + 1940952771.

It is an arithmetic number, because the mean of its divisors is an integer number (23291432760).

Almost surely, 2^163040029278 is an apocalyptic number.

163040029278 is an abundant number, since it is smaller than the sum of its proper divisors (209622894882).

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

163040029278 is a wasteful number, since it uses less digits than its factorization.

163040029278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3881905471.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 163040029278 in words is "one hundred sixty-three billion, forty million, twenty-nine thousand, two hundred seventy-eight".