20858168378 has 8 divisors (see below), whose sum is σ = 32647567968. Its totient is φ = 9975645724.

The previous prime is 20858168363. The next prime is 20858168417. The reversal of 20858168378 is 87386185802.

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

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 3 ways as a sum of consecutive naturals, for example, 226719176 + ... + 226719267.

It is an arithmetic number, because the mean of its divisors is an integer number (4080945996).

Almost surely, 2^20858168378 is an apocalyptic number.

20858168378 is a deficient number, since it is larger than the sum of its proper divisors (11789399590).

20858168378 is a wasteful number, since it uses less digits than its factorization.

20858168378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453438468.

The product of its (nonzero) digits is 5160960, while the sum is 56.

The spelling of 20858168378 in words is "twenty billion, eight hundred fifty-eight million, one hundred sixty-eight thousand, three hundred seventy-eight".