961814397673 has 2 divisors, whose sum is σ = 961814397674. Its totient is φ = 961814397672.

The previous prime is 961814397671. The next prime is 961814397703. The reversal of 961814397673 is 376793418169.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 540648442944 + 421165954729 = 735288^2 + 648973^2 .

It is a cyclic number.

It is not a de Polignac number, because 961814397673 - 2¹ = 961814397671 is a prime.

Together with 961814397671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (961814397671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480907198836 + 480907198837.

It is an arithmetic number, because the mean of its divisors is an integer number (480907198837).

Almost surely, 2^961814397673 is an apocalyptic number.

It is an amenable number.

961814397673 is a deficient number, since it is larger than the sum of its proper divisors (1).

961814397673 is an equidigital number, since it uses as much as digits as its factorization.

961814397673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41150592, while the sum is 64.

The spelling of 961814397673 in words is "nine hundred sixty-one billion, eight hundred fourteen million, three hundred ninety-seven thousand, six hundred seventy-three".