16442020303661 has 8 divisors (see below), whose sum is σ = 16972500240384. Its totient is φ = 15911546128560.

The previous prime is 16442020303613. The next prime is 16442020303693. The reversal of 16442020303661 is 16630302024461.

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 16442020303661 - 2²² = 16442016109357 is a prime.

It is a super-3 number, since 3×16442020303661³ (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 (16442020303061) 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, 4786436 + ... + 7469538.

It is an arithmetic number, because the mean of its divisors is an integer number (2121562530048).

Almost surely, 2^{16442020303661} is an apocalyptic number.

It is an amenable number.

16442020303661 is a deficient number, since it is larger than the sum of its proper divisors (530479936723).

16442020303661 is a wasteful number, since it uses less digits than its factorization.

16442020303661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880811.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 16442020303661 in words is "sixteen trillion, four hundred forty-two billion, twenty million, three hundred three thousand, six hundred sixty-one".