16447344540 has 96 divisors (see below), whose sum is σ = 50946900480. Its totient is φ = 3931065600.

The previous prime is 16447344533. The next prime is 16447344553. The reversal of 16447344540 is 4544374461.

It is a junction number, because it is equal to n+sod(n) for n = 16447344492 and 16447344501.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128635 + ... + 222354.

It is an arithmetic number, because the mean of its divisors is an integer number (530696880).

Almost surely, 2^16447344540 is an apocalyptic number.

16447344540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16447344540 is an abundant number, since it is smaller than the sum of its proper divisors (34499555940).

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

16447344540 is a wasteful number, since it uses less digits than its factorization.

16447344540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351083 (or 351081 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 42.

The spelling of 16447344540 in words is "sixteen billion, four hundred forty-seven million, three hundred forty-four thousand, five hundred forty".