6891144411377 has 8 divisors (see below), whose sum is σ = 6933515081376. Its totient is φ = 6848774884512.

The previous prime is 6891144411343. The next prime is 6891144411397. The reversal of 6891144411377 is 7731144411986.

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 6891144411377 - 2²⁰ = 6891143362801 is a prime.

It is a super-2 number, since 2×6891144411377² (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 (6891144411397) 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, 13993898 + ... + 14477964.

It is an arithmetic number, because the mean of its divisors is an integer number (866689385172).

Almost surely, 2^{6891144411377} is an apocalyptic number.

It is an amenable number.

6891144411377 is a deficient number, since it is larger than the sum of its proper divisors (42370669999).

6891144411377 is a wasteful number, since it uses less digits than its factorization.

6891144411377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571567.

The product of its digits is 4064256, while the sum is 56.

The spelling of 6891144411377 in words is "six trillion, eight hundred ninety-one billion, one hundred forty-four million, four hundred eleven thousand, three hundred seventy-seven".