70905857419 has 2 divisors, whose sum is σ = 70905857420. Its totient is φ = 70905857418.

The previous prime is 70905857417. The next prime is 70905857423. The reversal of 70905857419 is 91475850907.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70905857419 - 2¹ = 70905857417 is a prime.

It is a super-2 number, since 2×70905857419² (a number of 23 digits) contains 22 as substring.

Together with 70905857417, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 70905857419.

It is not a weakly prime, because it can be changed into another prime (70905857417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35452928709 + 35452928710.

It is an arithmetic number, because the mean of its divisors is an integer number (35452928710).

Almost surely, 2^70905857419 is an apocalyptic number.

70905857419 is a deficient number, since it is larger than the sum of its proper divisors (1).

70905857419 is an equidigital number, since it uses as much as digits as its factorization.

70905857419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 55.

The spelling of 70905857419 in words is "seventy billion, nine hundred five million, eight hundred fifty-seven thousand, four hundred nineteen".