16442615666455 has 16 divisors (see below), whose sum is σ = 21525711215904. Its totient is φ = 11957803425280.

The previous prime is 16442615666453. The next prime is 16442615666467. The reversal of 16442615666455 is 55466651624461.

It is not a de Polignac number, because 16442615666455 - 2¹ = 16442615666453 is a prime.

It is a super-3 number, since 3×16442615666455³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16442615666393 and 16442615666402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16442615666453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4343254 + ... + 7193683.

It is an arithmetic number, because the mean of its divisors is an integer number (1345356950994).

Almost surely, 2^{16442615666455} is an apocalyptic number.

16442615666455 is a deficient number, since it is larger than the sum of its proper divisors (5083095549449).

16442615666455 is a wasteful number, since it uses less digits than its factorization.

16442615666455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11562866.

The product of its digits is 124416000, while the sum is 61.

The spelling of 16442615666455 in words is "sixteen trillion, four hundred forty-two billion, six hundred fifteen million, six hundred sixty-six thousand, four hundred fifty-five".