16442615666375 has 128 divisors (see below), whose sum is σ = 21428957721600. Its totient is φ = 12589097664000.

The previous prime is 16442615666371. The next prime is 16442615666401. The reversal of 16442615666375 is 57366651624461.

It is a happy number.

It is not a de Polignac number, because 16442615666375 - 2² = 16442615666371 is a prime.

It is a super-3 number, since 3×16442615666375³ (a number of 41 digits) contains 333 as substring.

It is a congruent 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 127 ways as a sum of consecutive naturals, for example, 25180115549 + ... + 25180116201.

It is an arithmetic number, because the mean of its divisors is an integer number (167413732200).

Almost surely, 2^{16442615666375} is an apocalyptic number.

16442615666375 is a deficient number, since it is larger than the sum of its proper divisors (4986342055225).

16442615666375 is a wasteful number, since it uses less digits than its factorization.

16442615666375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314 (or 1304 counting only the distinct ones).

The product of its digits is 130636800, while the sum is 62.

The spelling of 16442615666375 in words is "sixteen trillion, four hundred forty-two billion, six hundred fifteen million, six hundred sixty-six thousand, three hundred seventy-five".