6870071929891 has 2 divisors, whose sum is σ = 6870071929892. Its totient is φ = 6870071929890.

The previous prime is 6870071929879. The next prime is 6870071929967. The reversal of 6870071929891 is 1989291700786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6870071929891 - 2⁹ = 6870071929379 is a prime.

It is not a weakly prime, because it can be changed into another prime (6870071929691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3435035964945 + 3435035964946.

It is an arithmetic number, because the mean of its divisors is an integer number (3435035964946).

Almost surely, 2^{6870071929891} is an apocalyptic number.

6870071929891 is a deficient number, since it is larger than the sum of its proper divisors (1).

6870071929891 is an equidigital number, since it uses as much as digits as its factorization.

6870071929891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27433728, while the sum is 67.

The spelling of 6870071929891 in words is "six trillion, eight hundred seventy billion, seventy-one million, nine hundred twenty-nine thousand, eight hundred ninety-one".