1263492732871 has 2 divisors, whose sum is σ = 1263492732872. Its totient is φ = 1263492732870.

The previous prime is 1263492732857. The next prime is 1263492732893. The reversal of 1263492732871 is 1782372943621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1263492732871 - 2²³ = 1263484344263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263492732811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631746366435 + 631746366436.

It is an arithmetic number, because the mean of its divisors is an integer number (631746366436).

Almost surely, 2^{1263492732871} is an apocalyptic number.

1263492732871 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263492732871 is an equidigital number, since it uses as much as digits as its factorization.

1263492732871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6096384, while the sum is 55.

The spelling of 1263492732871 in words is "one trillion, two hundred sixty-three billion, four hundred ninety-two million, seven hundred thirty-two thousand, eight hundred seventy-one".