70213968961 has 2 divisors, whose sum is σ = 70213968962. Its totient is φ = 70213968960.

The previous prime is 70213968953. The next prime is 70213968967. The reversal of 70213968961 is 16986931207.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69257922561 + 956046400 = 263169^2 + 30920^2 .

It is an emirp because it is prime and its reverse (16986931207) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70213968961 - 2³ = 70213968953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70213968899 and 70213968908.

It is not a weakly prime, because it can be changed into another prime (70213968967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35106984480 + 35106984481.

It is an arithmetic number, because the mean of its divisors is an integer number (35106984481).

Almost surely, 2^70213968961 is an apocalyptic number.

It is an amenable number.

70213968961 is a deficient number, since it is larger than the sum of its proper divisors (1).

70213968961 is an equidigital number, since it uses as much as digits as its factorization.

70213968961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 70213968961 in words is "seventy billion, two hundred thirteen million, nine hundred sixty-eight thousand, nine hundred sixty-one".