6978189369653 has 4 divisors (see below), whose sum is σ = 7281588907488. Its totient is φ = 6674789831820.

The previous prime is 6978189369617. The next prime is 6978189369691. The reversal of 6978189369653 is 3569639818796.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6978189369653 - 2¹⁴ = 6978189353269 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 (6978189369253) 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, 151699768883 + ... + 151699768928.

It is an arithmetic number, because the mean of its divisors is an integer number (1820397226872).

Almost surely, 2^{6978189369653} is an apocalyptic number.

It is an amenable number.

6978189369653 is a deficient number, since it is larger than the sum of its proper divisors (303399537835).

6978189369653 is a wasteful number, since it uses less digits than its factorization.

6978189369653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303399537834.

The product of its digits is 3174474240, while the sum is 80.

The spelling of 6978189369653 in words is "six trillion, nine hundred seventy-eight billion, one hundred eighty-nine million, three hundred sixty-nine thousand, six hundred fifty-three".