1229969774461 has 4 divisors (see below), whose sum is σ = 1230004970524. Its totient is φ = 1229934578400.

The previous prime is 1229969774441. The next prime is 1229969774471. The reversal of 1229969774461 is 1644779699221.

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 714920980900 + 515048793561 = 845530^2 + 717669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1229969774461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229969774441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17545560 + ... + 17615521.

It is an arithmetic number, because the mean of its divisors is an integer number (307501242631).

Almost surely, 2^{1229969774461} is an apocalyptic number.

It is an amenable number.

1229969774461 is a deficient number, since it is larger than the sum of its proper divisors (35196063).

1229969774461 is an equidigital number, since it uses as much as digits as its factorization.

1229969774461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35196062.

The product of its digits is 82301184, while the sum is 67.

The spelling of 1229969774461 in words is "one trillion, two hundred twenty-nine billion, nine hundred sixty-nine million, seven hundred seventy-four thousand, four hundred sixty-one".