16426578868 has 24 divisors (see below), whose sum is σ = 32947854912. Its totient is φ = 7019670144.

The previous prime is 16426578859. The next prime is 16426578901. The reversal of 16426578868 is 86887562461.

It is a super-2 number, since 2×16426578868² (a number of 21 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 835621 + ... + 855052.

It is an arithmetic number, because the mean of its divisors is an integer number (1372827288).

Almost surely, 2^16426578868 is an apocalyptic number.

It is an amenable number.

16426578868 is an abundant number, since it is smaller than the sum of its proper divisors (16521276044).

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

16426578868 is a wasteful number, since it uses less digits than its factorization.

16426578868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691031 (or 1691029 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 61.

The spelling of 16426578868 in words is "sixteen billion, four hundred twenty-six million, five hundred seventy-eight thousand, eight hundred sixty-eight".