16442066113621 has 8 divisors (see below), whose sum is σ = 16890729067904. Its totient is φ = 15993628569360.

The previous prime is 16442066113619. The next prime is 16442066113633. The reversal of 16442066113621 is 12631166024461.

16442066113621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16442066113621 - 2¹ = 16442066113619 is a prime.

It is a super-3 number, since 3×16442066113621³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16442066113691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56204625 + ... + 56496406.

It is an arithmetic number, because the mean of its divisors is an integer number (2111341133488).

Almost surely, 2^{16442066113621} is an apocalyptic number.

It is an amenable number.

16442066113621 is a deficient number, since it is larger than the sum of its proper divisors (448662954283).

16442066113621 is a wasteful number, since it uses less digits than its factorization.

16442066113621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112705011.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 16442066113621 in words is "sixteen trillion, four hundred forty-two billion, sixty-six million, one hundred thirteen thousand, six hundred twenty-one".