20168778062 has 8 divisors (see below), whose sum is σ = 31568522256. Its totient is φ = 9645937312.

The previous prime is 20168778041. The next prime is 20168778079. The reversal of 20168778062 is 26087786102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20168777998 and 20168778016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219225803 + ... + 219225894.

It is an arithmetic number, because the mean of its divisors is an integer number (3946065282).

Almost surely, 2^20168778062 is an apocalyptic number.

20168778062 is a deficient number, since it is larger than the sum of its proper divisors (11399744194).

20168778062 is a wasteful number, since it uses less digits than its factorization.

20168778062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438451722.

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 20168778062 in words is "twenty billion, one hundred sixty-eight million, seven hundred seventy-eight thousand, sixty-two".