16446414776 has 64 divisors (see below), whose sum is σ = 35205684480. Its totient is φ = 7129703680.

The previous prime is 16446414757. The next prime is 16446414821. The reversal of 16446414776 is 67741464461.

It is a super-2 number, since 2×16446414776² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 690620 + ... + 714036.

It is an arithmetic number, because the mean of its divisors is an integer number (550088820).

Almost surely, 2^16446414776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16446414776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17602842240).

16446414776 is an abundant number, since it is smaller than the sum of its proper divisors (18759269704).

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

16446414776 is a wasteful number, since it uses less digits than its factorization.

16446414776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23804 (or 23800 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 50.

The spelling of 16446414776 in words is "sixteen billion, four hundred forty-six million, four hundred fourteen thousand, seven hundred seventy-six".