70678516663 has 2 divisors, whose sum is σ = 70678516664. Its totient is φ = 70678516662.

The previous prime is 70678516637. The next prime is 70678516691. The reversal of 70678516663 is 36661587607.

It is a weak prime.

It is an emirp because it is prime and its reverse (36661587607) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70678516663 - 2²⁹ = 70141645751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70678516163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35339258331 + 35339258332.

It is an arithmetic number, because the mean of its divisors is an integer number (35339258332).

Almost surely, 2^70678516663 is an apocalyptic number.

70678516663 is a deficient number, since it is larger than the sum of its proper divisors (1).

70678516663 is an equidigital number, since it uses as much as digits as its factorization.

70678516663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 70678516663 in words is "seventy billion, six hundred seventy-eight million, five hundred sixteen thousand, six hundred sixty-three".