70866384691 has 2 divisors, whose sum is σ = 70866384692. Its totient is φ = 70866384690.

The previous prime is 70866384653. The next prime is 70866384713. The reversal of 70866384691 is 19648366807.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70866384691 - 2⁹ = 70866384179 is a prime.

It is not a weakly prime, because it can be changed into another prime (70866384601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35433192345 + 35433192346.

It is an arithmetic number, because the mean of its divisors is an integer number (35433192346).

Almost surely, 2^70866384691 is an apocalyptic number.

70866384691 is a deficient number, since it is larger than the sum of its proper divisors (1).

70866384691 is an equidigital number, since it uses as much as digits as its factorization.

70866384691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10450944, while the sum is 58.

The spelling of 70866384691 in words is "seventy billion, eight hundred sixty-six million, three hundred eighty-four thousand, six hundred ninety-one".