1013521060609 has 2 divisors, whose sum is σ = 1013521060610. Its totient is φ = 1013521060608.

The previous prime is 1013521060579. The next prime is 1013521060723. The reversal of 1013521060609 is 9060601253101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 769430717584 + 244090343025 = 877172^2 + 494055^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013521060609 - 2⁵ = 1013521060577 is a prime.

It is not a weakly prime, because it can be changed into another prime (1013521063609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506760530304 + 506760530305.

It is an arithmetic number, because the mean of its divisors is an integer number (506760530305).

Almost surely, 2^{1013521060609} is an apocalyptic number.

It is an amenable number.

1013521060609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013521060609 is an equidigital number, since it uses as much as digits as its factorization.

1013521060609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 34.

The spelling of 1013521060609 in words is "one trillion, thirteen billion, five hundred twenty-one million, sixty thousand, six hundred nine".