6789702626921 has 2 divisors, whose sum is σ = 6789702626922. Its totient is φ = 6789702626920.

The previous prime is 6789702626831. The next prime is 6789702626957. The reversal of 6789702626921 is 1296262079876.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6084169825321 + 705532801600 = 2466611^2 + 839960^2 .

It is a cyclic number.

It is not a de Polignac number, because 6789702626921 - 2¹⁰ = 6789702625897 is a prime.

It is a super-2 number, since 2×6789702626921² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6789702626521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3394851313460 + 3394851313461.

It is an arithmetic number, because the mean of its divisors is an integer number (3394851313461).

Almost surely, 2^{6789702626921} is an apocalyptic number.

It is an amenable number.

6789702626921 is a deficient number, since it is larger than the sum of its proper divisors (1).

6789702626921 is an equidigital number, since it uses as much as digits as its factorization.

6789702626921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54867456, while the sum is 65.

The spelling of 6789702626921 in words is "six trillion, seven hundred eighty-nine billion, seven hundred two million, six hundred twenty-six thousand, nine hundred twenty-one".