16442066421340 has 24 divisors (see below), whose sum is σ = 39460959411552. Its totient is φ = 5637279915840.

The previous prime is 16442066421337. The next prime is 16442066421379. The reversal of 16442066421340 is 4312466024461.

It is a super-3 number, since 3×16442066421340³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58721665651 + ... + 58721665930.

It is an arithmetic number, because the mean of its divisors is an integer number (1644206642148).

Almost surely, 2^{16442066421340} is an apocalyptic number.

16442066421340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16442066421340 is an abundant number, since it is smaller than the sum of its proper divisors (23018892990212).

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

16442066421340 is a wasteful number, since it uses less digits than its factorization.

16442066421340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117443331597 (or 117443331595 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 43.

The spelling of 16442066421340 in words is "sixteen trillion, four hundred forty-two billion, sixty-six million, four hundred twenty-one thousand, three hundred forty".