2012944021457 has 2 divisors, whose sum is σ = 2012944021458. Its totient is φ = 2012944021456.

The previous prime is 2012944021453. The next prime is 2012944021489. The reversal of 2012944021457 is 7541204492102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1531552278481 + 481391742976 = 1237559^2 + 693824^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012944021457 - 2² = 2012944021453 is a prime.

It is not a weakly prime, because it can be changed into another prime (2012944021453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006472010728 + 1006472010729.

It is an arithmetic number, because the mean of its divisors is an integer number (1006472010729).

Almost surely, 2^{2012944021457} is an apocalyptic number.

It is an amenable number.

2012944021457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012944021457 is an equidigital number, since it uses as much as digits as its factorization.

2012944021457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 2012944021457 in words is "two trillion, twelve billion, nine hundred forty-four million, twenty-one thousand, four hundred fifty-seven".