11949076043281 has 8 divisors (see below), whose sum is σ = 12904689669480. Its totient is φ = 10998670121472.

The previous prime is 11949076043273. The next prime is 11949076043287. The reversal of 11949076043281 is 18234067094911.

It can be written as a sum of positive squares in 4 ways, for example, as 469888314256 + 11479187729025 = 685484^2 + 3388095^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11949076043281 - 2³ = 11949076043273 is a prime.

It is a super-2 number, since 2×11949076043281² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11949076043287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1301921326 + ... + 1301930503.

It is an arithmetic number, because the mean of its divisors is an integer number (1613086208685).

Almost surely, 2^{11949076043281} is an apocalyptic number.

It is an amenable number.

11949076043281 is a deficient number, since it is larger than the sum of its proper divisors (955613626199).

11949076043281 is a wasteful number, since it uses less digits than its factorization.

11949076043281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603852195.

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

The spelling of 11949076043281 in words is "eleven trillion, nine hundred forty-nine billion, seventy-six million, forty-three thousand, two hundred eighty-one".