1212774717953 has 2 divisors, whose sum is σ = 1212774717954. Its totient is φ = 1212774717952.

The previous prime is 1212774717937. The next prime is 1212774717971. The reversal of 1212774717953 is 3597174772121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1111289147329 + 101485570624 = 1054177^2 + 318568^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212774717953 - 2⁴ = 1212774717937 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212774717983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606387358976 + 606387358977.

It is an arithmetic number, because the mean of its divisors is an integer number (606387358977).

Almost surely, 2^{1212774717953} is an apocalyptic number.

It is an amenable number.

1212774717953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212774717953 is an equidigital number, since it uses as much as digits as its factorization.

1212774717953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5186160, while the sum is 56.

The spelling of 1212774717953 in words is "one trillion, two hundred twelve billion, seven hundred seventy-four million, seven hundred seventeen thousand, nine hundred fifty-three".