16444607423856 has 80 divisors (see below), whose sum is σ = 44330017340160. Its totient is φ = 5243080944640.

The previous prime is 16444607423819. The next prime is 16444607423897. The reversal of 16444607423856 is 65832470644461.

It is a super-2 number, since 2×16444607423856² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16444607423856.

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, 52217875 + ... + 52531853.

It is an arithmetic number, because the mean of its divisors is an integer number (554125216752).

Almost surely, 2^{16444607423856} is an apocalyptic number.

16444607423856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16444607423856 is an abundant number, since it is smaller than the sum of its proper divisors (27885409916304).

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

16444607423856 is a wasteful number, since it uses less digits than its factorization.

16444607423856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361454 (or 361448 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 60.

The spelling of 16444607423856 in words is "sixteen trillion, four hundred forty-four billion, six hundred seven million, four hundred twenty-three thousand, eight hundred fifty-six".