6894600399971 has 2 divisors, whose sum is σ = 6894600399972. Its totient is φ = 6894600399970.

The previous prime is 6894600399859. The next prime is 6894600400067. The reversal of 6894600399971 is 1799930064986.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6894600399971 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 6894600399895 and 6894600399904.

It is not a weakly prime, because it can be changed into another prime (6894600399371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3447300199985 + 3447300199986.

It is an arithmetic number, because the mean of its divisors is an integer number (3447300199986).

Almost surely, 2^{6894600399971} is an apocalyptic number.

6894600399971 is a deficient number, since it is larger than the sum of its proper divisors (1).

6894600399971 is an equidigital number, since it uses as much as digits as its factorization.

6894600399971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158723712, while the sum is 71.

The spelling of 6894600399971 in words is "six trillion, eight hundred ninety-four billion, six hundred million, three hundred ninety-nine thousand, nine hundred seventy-one".