6998730378989 has 2 divisors, whose sum is σ = 6998730378990. Its totient is φ = 6998730378988.

The previous prime is 6998730378977. The next prime is 6998730379001. The reversal of 6998730378989 is 9898730378996.

It is a balanced prime because it is at equal distance from previous prime (6998730378977) and next prime (6998730379001).

It can be written as a sum of positive squares in only one way, i.e., 6993036469225 + 5693909764 = 2644435^2 + 75458^2 .

It is a cyclic number.

It is not a de Polignac number, because 6998730378989 - 2²⁰ = 6998729330413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6998730378989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6998730378889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3499365189494 + 3499365189495.

It is an arithmetic number, because the mean of its divisors is an integer number (3499365189495).

Almost surely, 2^{6998730378989} is an apocalyptic number.

It is an amenable number.

6998730378989 is a deficient number, since it is larger than the sum of its proper divisors (1).

6998730378989 is an equidigital number, since it uses as much as digits as its factorization.

6998730378989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8888527872, while the sum is 86.

The spelling of 6998730378989 in words is "six trillion, nine hundred ninety-eight billion, seven hundred thirty million, three hundred seventy-eight thousand, nine hundred eighty-nine".