2669784466891 has 8 divisors (see below), whose sum is σ = 2861155622304. Its totient is φ = 2484687775680.

The previous prime is 2669784466871. The next prime is 2669784466897. The reversal of 2669784466891 is 1986644879662.

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

It is a cyclic number.

It is not a de Polignac number, because 2669784466891 - 2¹¹ = 2669784464843 is a prime.

It is a super-2 number, since 2×2669784466891² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2669784466897) 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, 1568615170 + ... + 1568616871.

It is an arithmetic number, because the mean of its divisors is an integer number (357644452788).

Almost surely, 2^{2669784466891} is an apocalyptic number.

2669784466891 is a deficient number, since it is larger than the sum of its proper divisors (191371155413).

2669784466891 is a wasteful number, since it uses less digits than its factorization.

2669784466891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3137232101.

The product of its digits is 1504935936, while the sum is 76.

The spelling of 2669784466891 in words is "two trillion, six hundred sixty-nine billion, seven hundred eighty-four million, four hundred sixty-six thousand, eight hundred ninety-one".