6978158177814 has 24 divisors (see below), whose sum is σ = 15507061310520. Its totient is φ = 2326046255316.

The previous prime is 6978158177797. The next prime is 6978158177819. The reversal of 6978158177814 is 4187718518796.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6978158177819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19232127 + ... + 19591605.

It is an arithmetic number, because the mean of its divisors is an integer number (646127554605).

Almost surely, 2^{6978158177814} is an apocalyptic number.

6978158177814 is an abundant number, since it is smaller than the sum of its proper divisors (8528903132706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6978158177814 is an frugal number, since it uses more digits than its factorization.

6978158177814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718969 (or 359484 counting only the distinct ones).

The product of its digits is 189665280, while the sum is 72.

The spelling of 6978158177814 in words is "six trillion, nine hundred seventy-eight billion, one hundred fifty-eight million, one hundred seventy-seven thousand, eight hundred fourteen".