1351705426261 has 2 divisors, whose sum is σ = 1351705426262. Its totient is φ = 1351705426260.

The previous prime is 1351705426241. The next prime is 1351705426273. The reversal of 1351705426261 is 1626245071531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1267355841361 + 84349584900 = 1125769^2 + 290430^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351705426261 - 2¹⁹ = 1351704901973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1351705426241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675852713130 + 675852713131.

It is an arithmetic number, because the mean of its divisors is an integer number (675852713131).

Almost surely, 2^{1351705426261} is an apocalyptic number.

It is an amenable number.

1351705426261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351705426261 is an equidigital number, since it uses as much as digits as its factorization.

1351705426261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 1351705426261 in words is "one trillion, three hundred fifty-one billion, seven hundred five million, four hundred twenty-six thousand, two hundred sixty-one".