16447966812 has 48 divisors (see below), whose sum is σ = 43041438720. Its totient is φ = 5431412016.

The previous prime is 16447966781. The next prime is 16447966813. The reversal of 16447966812 is 21866974461.

16447966812 is a `hidden beast` number, since 164 + 479 + 6 + 6 + 8 + 1 + 2 = 666.

It is a super-2 number, since 2×16447966812² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16447966813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 700108 + ... + 723219.

It is an arithmetic number, because the mean of its divisors is an integer number (896696640).

Almost surely, 2^16447966812 is an apocalyptic number.

16447966812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16447966812 is an abundant number, since it is smaller than the sum of its proper divisors (26593471908).

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

16447966812 is a wasteful number, since it uses less digits than its factorization.

16447966812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423447 (or 1423439 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 16447966812 in words is "sixteen billion, four hundred forty-seven million, nine hundred sixty-six thousand, eight hundred twelve".