70851066449 has 2 divisors, whose sum is σ = 70851066450. Its totient is φ = 70851066448.

The previous prime is 70851066421. The next prime is 70851066479. The reversal of 70851066449 is 94466015807.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70763980225 + 87086224 = 266015^2 + 9332^2 .

It is an emirp because it is prime and its reverse (94466015807) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70851066449 - 2⁸ = 70851066193 is a prime.

It is a super-2 number, since 2×70851066449² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70851066397 and 70851066406.

It is not a weakly prime, because it can be changed into another prime (70851066479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35425533224 + 35425533225.

It is an arithmetic number, because the mean of its divisors is an integer number (35425533225).

Almost surely, 2^70851066449 is an apocalyptic number.

It is an amenable number.

70851066449 is a deficient number, since it is larger than the sum of its proper divisors (1).

70851066449 is an equidigital number, since it uses as much as digits as its factorization.

70851066449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 70851066449 in words is "seventy billion, eight hundred fifty-one million, sixty-six thousand, four hundred forty-nine".