1249054523779 has 2 divisors, whose sum is σ = 1249054523780. Its totient is φ = 1249054523778.

The previous prime is 1249054523777. The next prime is 1249054523831. The reversal of 1249054523779 is 9773254509421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1249054523779 - 2¹ = 1249054523777 is a prime.

Together with 1249054523777, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1249054523777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624527261889 + 624527261890.

It is an arithmetic number, because the mean of its divisors is an integer number (624527261890).

Almost surely, 2^{1249054523779} is an apocalyptic number.

1249054523779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249054523779 is an equidigital number, since it uses as much as digits as its factorization.

1249054523779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19051200, while the sum is 58.

The spelling of 1249054523779 in words is "one trillion, two hundred forty-nine billion, fifty-four million, five hundred twenty-three thousand, seven hundred seventy-nine".