1269996017481 has 9 divisors (see below), whose sum is σ = 1834443575341. Its totient is φ = 846661757772.

The previous prime is 1269996017441. The next prime is 1269996017489. The reversal of 1269996017481 is 1847106999621.

The square root of 1269996017481 is 1126941.

It is a perfect power (a square), and thus also a powerful number.

1269996017481 is a `hidden beast` number, since 1 + 2 + 6 + 9 + 99 + 60 + 1 + 7 + 481 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1269996017481 - 2³⁵ = 1235636279113 is a prime.

It is a super-2 number, since 2×1269996017481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1269996017489) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3193000 + ... + 3568646.

Almost surely, 2^{1269996017481} is an apocalyptic number.

1269996017481 is the 1126941-st square number.

1269996017481 is the 563471-st centered octagonal number.

It is an amenable number.

1269996017481 is a deficient number, since it is larger than the sum of its proper divisors (564447557860).

1269996017481 is an frugal number, since it uses more digits than its factorization.

1269996017481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751300 (or 375650 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 63.

The spelling of 1269996017481 in words is "one trillion, two hundred sixty-nine billion, nine hundred ninety-six million, seventeen thousand, four hundred eighty-one".