1261426387483 has 2 divisors, whose sum is σ = 1261426387484. Its totient is φ = 1261426387482.

The previous prime is 1261426387477. The next prime is 1261426387597. The reversal of 1261426387483 is 3847836241621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1261426387483 - 2⁹ = 1261426386971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1261426387453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630713193741 + 630713193742.

It is an arithmetic number, because the mean of its divisors is an integer number (630713193742).

Almost surely, 2^{1261426387483} is an apocalyptic number.

1261426387483 is a deficient number, since it is larger than the sum of its proper divisors (1).

1261426387483 is an equidigital number, since it uses as much as digits as its factorization.

1261426387483 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9289728, while the sum is 55.

The spelling of 1261426387483 in words is "one trillion, two hundred sixty-one billion, four hundred twenty-six million, three hundred eighty-seven thousand, four hundred eighty-three".