2012944021456 has 10 divisors (see below), whose sum is σ = 3900079041602. Its totient is φ = 1006472010720.

The previous prime is 2012944021453. The next prime is 2012944021457. The reversal of 2012944021456 is 6541204492102.

It can be written as a sum of positive squares in only one way, i.e., 1537649600400 + 475294421056 = 1240020^2 + 689416^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012944021453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62904500655 + ... + 62904500686.

Almost surely, 2^{2012944021456} is an apocalyptic number.

It is an amenable number.

2012944021456 is a deficient number, since it is larger than the sum of its proper divisors (1887135020146).

2012944021456 is a wasteful number, since it uses less digits than its factorization.

2012944021456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125809001349 (or 125809001343 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 2012944021456 in words is "two trillion, twelve billion, nine hundred forty-four million, twenty-one thousand, four hundred fifty-six".