20118447158 has 8 divisors (see below), whose sum is σ = 30183377328. Its totient is φ = 10057321384.

The previous prime is 20118447137. The next prime is 20118447199. The reversal of 20118447158 is 85174481102.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 937841 + ... + 959052.

It is an arithmetic number, because the mean of its divisors is an integer number (3772922166).

Almost surely, 2^20118447158 is an apocalyptic number.

20118447158 is a deficient number, since it is larger than the sum of its proper divisors (10064930170).

20118447158 is a wasteful number, since it uses less digits than its factorization.

20118447158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902198.

The product of its (nonzero) digits is 71680, while the sum is 41.

The spelling of 20118447158 in words is "twenty billion, one hundred eighteen million, four hundred forty-seven thousand, one hundred fifty-eight".