1289769062401 has 4 divisors (see below), whose sum is σ = 1289777587204. Its totient is φ = 1289760537600.

The previous prime is 1289769062383. The next prime is 1289769062447. The reversal of 1289769062401 is 1042609679821.

It is a Cunningham number, because it is equal to 1135680²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 878568782400 + 411200280001 = 937320^2 + 641249^2 .

It is a cyclic number.

It is not a de Polignac number, because 1289769062401 - 2¹³ = 1289769054209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1289769062201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4031280 + ... + 4339441.

It is an arithmetic number, because the mean of its divisors is an integer number (322444396801).

Almost surely, 2^{1289769062401} is an apocalyptic number.

It is an amenable number.

1289769062401 is a deficient number, since it is larger than the sum of its proper divisors (8524803).

1289769062401 is an equidigital number, since it uses as much as digits as its factorization.

1289769062401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8524802.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 1289769062401 in words is "one trillion, two hundred eighty-nine billion, seven hundred sixty-nine million, sixty-two thousand, four hundred one".