16423378812 has 36 divisors (see below), whose sum is σ = 41648168016. Its totient is φ = 5456853120.

The previous prime is 16423378799. The next prime is 16423378841. The reversal of 16423378812 is 21887332461.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 722253 + ... + 744644.

It is an arithmetic number, because the mean of its divisors is an integer number (1156893556).

Almost surely, 2^16423378812 is an apocalyptic number.

16423378812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16423378812 is an abundant number, since it is smaller than the sum of its proper divisors (25224789204).

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

16423378812 is a wasteful number, since it uses less digits than its factorization.

16423378812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467218 (or 1467213 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The spelling of 16423378812 in words is "sixteen billion, four hundred twenty-three million, three hundred seventy-eight thousand, eight hundred twelve".