2012191823513 has 2 divisors, whose sum is σ = 2012191823514. Its totient is φ = 2012191823512.

The previous prime is 2012191823501. The next prime is 2012191823519. The reversal of 2012191823513 is 3153281912102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1795527640729 + 216664182784 = 1339973^2 + 465472^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012191823513 - 2⁴ = 2012191823497 is a prime.

It is a super-2 number, since 2×2012191823513² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2012191823519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006095911756 + 1006095911757.

It is an arithmetic number, because the mean of its divisors is an integer number (1006095911757).

Almost surely, 2^{2012191823513} is an apocalyptic number.

It is an amenable number.

2012191823513 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012191823513 is an equidigital number, since it uses as much as digits as its factorization.

2012191823513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 2012191823513 in words is "two trillion, twelve billion, one hundred ninety-one million, eight hundred twenty-three thousand, five hundred thirteen".