6984678194477 has 4 divisors (see below), whose sum is σ = 7013660261916. Its totient is φ = 6955696127040.

The previous prime is 6984678194453. The next prime is 6984678194479. The reversal of 6984678194477 is 7744918764896.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4883949721156 + 2100728473321 = 2209966^2 + 1449389^2 .

It is a cyclic number.

It is not a de Polignac number, because 6984678194477 - 2¹⁰ = 6984678193453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6984678194479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14491033358 + ... + 14491033839.

It is an arithmetic number, because the mean of its divisors is an integer number (1753415065479).

Almost surely, 2^{6984678194477} is an apocalyptic number.

It is an amenable number.

6984678194477 is a deficient number, since it is larger than the sum of its proper divisors (28982067439).

6984678194477 is a wasteful number, since it uses less digits than its factorization.

6984678194477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28982067438.

The product of its digits is 4096770048, while the sum is 80.

The spelling of 6984678194477 in words is "six trillion, nine hundred eighty-four billion, six hundred seventy-eight million, one hundred ninety-four thousand, four hundred seventy-seven".