1263604924817 has 2 divisors, whose sum is σ = 1263604924818. Its totient is φ = 1263604924816.

The previous prime is 1263604924793. The next prime is 1263604924889. The reversal of 1263604924817 is 7184294063621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1201619361856 + 61985562961 = 1096184^2 + 248969^2 .

It is a cyclic number.

It is not a de Polignac number, because 1263604924817 - 2¹⁶ = 1263604859281 is a prime.

It is not a weakly prime, because it can be changed into another prime (1263604924717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631802462408 + 631802462409.

It is an arithmetic number, because the mean of its divisors is an integer number (631802462409).

Almost surely, 2^{1263604924817} is an apocalyptic number.

It is an amenable number.

1263604924817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263604924817 is an equidigital number, since it uses as much as digits as its factorization.

1263604924817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 1263604924817 in words is "one trillion, two hundred sixty-three billion, six hundred four million, nine hundred twenty-four thousand, eight hundred seventeen".