1259649077749 has 2 divisors, whose sum is σ = 1259649077750. Its totient is φ = 1259649077748.

The previous prime is 1259649077683. The next prime is 1259649077821. The reversal of 1259649077749 is 9477709469521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1258394855524 + 1254222225 = 1121782^2 + 35415^2 .

It is an emirp because it is prime and its reverse (9477709469521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1259649077749 - 2¹⁵ = 1259649044981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1259649077249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629824538874 + 629824538875.

It is an arithmetic number, because the mean of its divisors is an integer number (629824538875).

Almost surely, 2^{1259649077749} is an apocalyptic number.

It is an amenable number.

1259649077749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1259649077749 is an equidigital number, since it uses as much as digits as its factorization.

1259649077749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240045120, while the sum is 70.

The spelling of 1259649077749 in words is "one trillion, two hundred fifty-nine billion, six hundred forty-nine million, seventy-seven thousand, seven hundred forty-nine".