11453291109561 has 12 divisors (see below), whose sum is σ = 17764288251792. Its totient is φ = 6544737776808.

The previous prime is 11453291109473. The next prime is 11453291109587. The reversal of 11453291109561 is 16590119235411.

It is not a de Polignac number, because 11453291109561 - 2³¹ = 11451143625913 is a prime.

It is a super-2 number, since 2×11453291109561² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11453291109561.

It is not an unprimeable number, because it can be changed into a prime (11453291159561) 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 11 ways as a sum of consecutive naturals, for example, 38956772335 + ... + 38956772628.

It is an arithmetic number, because the mean of its divisors is an integer number (1480357354316).

Almost surely, 2^{11453291109561} is an apocalyptic number.

It is an amenable number.

11453291109561 is a deficient number, since it is larger than the sum of its proper divisors (6310997142231).

11453291109561 is an equidigital number, since it uses as much as digits as its factorization.

11453291109561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77913544980 (or 77913544973 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 48.

The spelling of 11453291109561 in words is "eleven trillion, four hundred fifty-three billion, two hundred ninety-one million, one hundred nine thousand, five hundred sixty-one".