1641400166289 has 8 divisors (see below), whose sum is σ = 2356882290112. Its totient is φ = 1010092410000.

The previous prime is 1641400166281. The next prime is 1641400166293. The reversal of 1641400166289 is 9826610041461.

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

It is not a de Polignac number, because 1641400166289 - 2³ = 1641400166281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1641400166281) 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, 21043591837 + ... + 21043591914.

It is an arithmetic number, because the mean of its divisors is an integer number (294610286264).

Almost surely, 2^{1641400166289} is an apocalyptic number.

It is an amenable number.

1641400166289 is a deficient number, since it is larger than the sum of its proper divisors (715482123823).

1641400166289 is a wasteful number, since it uses less digits than its factorization.

1641400166289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42087183767.

The product of its (nonzero) digits is 497664, while the sum is 48.

The spelling of 1641400166289 in words is "one trillion, six hundred forty-one billion, four hundred million, one hundred sixty-six thousand, two hundred eighty-nine".