70163216987 has 2 divisors, whose sum is σ = 70163216988. Its totient is φ = 70163216986.

The previous prime is 70163216939. The next prime is 70163216989. The reversal of 70163216987 is 78961236107.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70163216987 - 2⁶ = 70163216923 is a prime.

It is a super-3 number, since 3×70163216987³ (a number of 34 digits) contains 333 as substring.

Together with 70163216989, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (70163216989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35081608493 + 35081608494.

It is an arithmetic number, because the mean of its divisors is an integer number (35081608494).

Almost surely, 2^70163216987 is an apocalyptic number.

70163216987 is a deficient number, since it is larger than the sum of its proper divisors (1).

70163216987 is an equidigital number, since it uses as much as digits as its factorization.

70163216987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 70163216987 in words is "seventy billion, one hundred sixty-three million, two hundred sixteen thousand, nine hundred eighty-seven".