16442615666377 has 8 divisors (see below), whose sum is σ = 16845419761632. Its totient is φ = 16039895604000.

The previous prime is 16442615666371. The next prime is 16442615666401. The reversal of 16442615666377 is 77366651624461.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16442615666377 is a prime.

It is a super-3 number, since 3×16442615666377³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16442615666371) 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, 20611999 + ... + 21394852.

It is an arithmetic number, because the mean of its divisors is an integer number (2105677470204).

Almost surely, 2^{16442615666377} is an apocalyptic number.

It is an amenable number.

16442615666377 is a deficient number, since it is larger than the sum of its proper divisors (402804095255).

16442615666377 is an equidigital number, since it uses as much as digits as its factorization.

16442615666377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42016439.

The product of its digits is 182891520, while the sum is 64.

The spelling of 16442615666377 in words is "sixteen trillion, four hundred forty-two billion, six hundred fifteen million, six hundred sixty-six thousand, three hundred seventy-seven".