1026449515873 has 2 divisors, whose sum is σ = 1026449515874. Its totient is φ = 1026449515872.

The previous prime is 1026449515853. The next prime is 1026449515877. The reversal of 1026449515873 is 3785159446201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 627490532449 + 398958983424 = 792143^2 + 631632^2 .

It is a cyclic number.

It is not a de Polignac number, because 1026449515873 - 2²¹ = 1026447418721 is a prime.

It is not a weakly prime, because it can be changed into another prime (1026449515877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513224757936 + 513224757937.

It is an arithmetic number, because the mean of its divisors is an integer number (513224757937).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1026449515873 = 2052899031746, but 3⋅1026449515873 = 3079348547619 is not.

Almost surely, 2^{1026449515873} is an apocalyptic number.

It is an amenable number.

1026449515873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1026449515873 is an equidigital number, since it uses as much as digits as its factorization.

1026449515873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 1026449515873 in words is "one trillion, twenty-six billion, four hundred forty-nine million, five hundred fifteen thousand, eight hundred seventy-three".