16858678478 has 8 divisors (see below), whose sum is σ = 26103760320. Its totient is φ = 8157425040.

The previous prime is 16858678451. The next prime is 16858678517. The reversal of 16858678478 is 87487685861.

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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135957023 + ... + 135957146.

It is an arithmetic number, because the mean of its divisors is an integer number (3262970040).

Almost surely, 2^16858678478 is an apocalyptic number.

16858678478 is a deficient number, since it is larger than the sum of its proper divisors (9245081842).

16858678478 is a wasteful number, since it uses less digits than its factorization.

16858678478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271914202.

The product of its digits is 144506880, while the sum is 68.

The spelling of 16858678478 in words is "sixteen billion, eight hundred fifty-eight million, six hundred seventy-eight thousand, four hundred seventy-eight".