1023532521449 has 2 divisors, whose sum is σ = 1023532521450. Its totient is φ = 1023532521448.

The previous prime is 1023532521413. The next prime is 1023532521457. The reversal of 1023532521449 is 9441252353201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 950416361449 + 73116160000 = 974893^2 + 270400^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023532521449 - 2²⁴ = 1023515744233 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1023532521499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511766260724 + 511766260725.

It is an arithmetic number, because the mean of its divisors is an integer number (511766260725).

Almost surely, 2^{1023532521449} is an apocalyptic number.

It is an amenable number.

1023532521449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023532521449 is an equidigital number, since it uses as much as digits as its factorization.

1023532521449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 1023532521449 in words is "one trillion, twenty-three billion, five hundred thirty-two million, five hundred twenty-one thousand, four hundred forty-nine".