20066163607878 has 32 divisors (see below), whose sum is σ = 40909022784000. Its totient is φ = 6559392199776.

The previous prime is 20066163607837. The next prime is 20066163607879. The reversal of 20066163607878 is 87870636166002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20066163607879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14363758 + ... + 15698721.

It is an arithmetic number, because the mean of its divisors is an integer number (1278406962000).

Almost surely, 2^{20066163607878} is an apocalyptic number.

20066163607878 is an abundant number, since it is smaller than the sum of its proper divisors (20842859176122).

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

20066163607878 is a wasteful number, since it uses less digits than its factorization.

20066163607878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30064636.

The product of its (nonzero) digits is 24385536, while the sum is 60.

The spelling of 20066163607878 in words is "twenty trillion, sixty-six billion, one hundred sixty-three million, six hundred seven thousand, eight hundred seventy-eight".