1291500292783 has 2 divisors, whose sum is σ = 1291500292784. Its totient is φ = 1291500292782.

The previous prime is 1291500292759. The next prime is 1291500292793. The reversal of 1291500292783 is 3872920051921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1291500292783 - 2¹⁷ = 1291500161711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1291500292793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645750146391 + 645750146392.

It is an arithmetic number, because the mean of its divisors is an integer number (645750146392).

Almost surely, 2^{1291500292783} is an apocalyptic number.

1291500292783 is a deficient number, since it is larger than the sum of its proper divisors (1).

1291500292783 is an equidigital number, since it uses as much as digits as its factorization.

1291500292783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 1291500292783 in words is "one trillion, two hundred ninety-one billion, five hundred million, two hundred ninety-two thousand, seven hundred eighty-three".