6993921317771 has 2 divisors, whose sum is σ = 6993921317772. Its totient is φ = 6993921317770.

The previous prime is 6993921317743. The next prime is 6993921317833. The reversal of 6993921317771 is 1777131293996.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6993921317771 - 2²² = 6993917123467 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6993921317698 and 6993921317707.

It is not a weakly prime, because it can be changed into another prime (6993921319771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3496960658885 + 3496960658886.

It is an arithmetic number, because the mean of its divisors is an integer number (3496960658886).

Almost surely, 2^{6993921317771} is an apocalyptic number.

6993921317771 is a deficient number, since it is larger than the sum of its proper divisors (1).

6993921317771 is an equidigital number, since it uses as much as digits as its factorization.

6993921317771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27005076, while the sum is 65.

The spelling of 6993921317771 in words is "six trillion, nine hundred ninety-three billion, nine hundred twenty-one million, three hundred seventeen thousand, seven hundred seventy-one".