1263100435613 has 2 divisors, whose sum is σ = 1263100435614. Its totient is φ = 1263100435612.

The previous prime is 1263100435549. The next prime is 1263100435669. The reversal of 1263100435613 is 3165340013621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1202132430724 + 60968004889 = 1096418^2 + 246917^2 .

It is a cyclic number.

It is not a de Polignac number, because 1263100435613 - 2⁶ = 1263100435549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263100435813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631550217806 + 631550217807.

It is an arithmetic number, because the mean of its divisors is an integer number (631550217807).

Almost surely, 2^{1263100435613} is an apocalyptic number.

It is an amenable number.

1263100435613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263100435613 is an equidigital number, since it uses as much as digits as its factorization.

1263100435613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 1263100435613 in words is "one trillion, two hundred sixty-three billion, one hundred million, four hundred thirty-five thousand, six hundred thirteen".