2129666495885 has 8 divisors (see below), whose sum is σ = 2555707900416. Its totient is φ = 1703661126480.

The previous prime is 2129666495819. The next prime is 2129666495893. The reversal of 2129666495885 is 5885946669212.

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

It is not a de Polignac number, because 2129666495885 - 2³⁸ = 1854788588941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8878589 + ... + 9115298.

It is an arithmetic number, because the mean of its divisors is an integer number (319463487552).

Almost surely, 2^{2129666495885} is an apocalyptic number.

It is an amenable number.

2129666495885 is a deficient number, since it is larger than the sum of its proper divisors (426041404531).

2129666495885 is a wasteful number, since it uses less digits than its factorization.

2129666495885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18017563.

The product of its digits is 447897600, while the sum is 71.

The spelling of 2129666495885 in words is "two trillion, one hundred twenty-nine billion, six hundred sixty-six million, four hundred ninety-five thousand, eight hundred eighty-five".