1881614266561 has 8 divisors (see below), whose sum is σ = 1980714010400. Its totient is φ = 1782521264160.

The previous prime is 1881614266529. The next prime is 1881614266577. The reversal of 1881614266561 is 1656624161881.

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

It is not a de Polignac number, because 1881614266561 - 2⁵ = 1881614266529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1881614266591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1107351 + ... + 2233708.

It is an arithmetic number, because the mean of its divisors is an integer number (247589251300).

Almost surely, 2^{1881614266561} is an apocalyptic number.

It is an amenable number.

1881614266561 is a deficient number, since it is larger than the sum of its proper divisors (99099743839).

1881614266561 is a wasteful number, since it uses less digits than its factorization.

1881614266561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370719.

The product of its digits is 3317760, while the sum is 55.

The spelling of 1881614266561 in words is "one trillion, eight hundred eighty-one billion, six hundred fourteen million, two hundred sixty-six thousand, five hundred sixty-one".