16444262480 has 80 divisors (see below), whose sum is σ = 39857591808. Its totient is φ = 6302400000.

The previous prime is 16444262479. The next prime is 16444262521. The reversal of 16444262480 is 8426244461.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×16444262480² (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, 217655 + ... + 283305.

Almost surely, 2^16444262480 is an apocalyptic number.

16444262480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16444262480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19928795904).

16444262480 is an abundant number, since it is smaller than the sum of its proper divisors (23413329328).

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

16444262480 is a wasteful number, since it uses less digits than its factorization.

16444262480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65796 (or 65790 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 41.

The spelling of 16444262480 in words is "sixteen billion, four hundred forty-four million, two hundred sixty-two thousand, four hundred eighty".