11847797846449 has 4 divisors (see below), whose sum is σ = 11851938988020. Its totient is φ = 11843656704880.

The previous prime is 11847797846407. The next prime is 11847797846453. The reversal of 11847797846449 is 94464879774811.

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 3576421846449 + 8271376000000 = 1891143^2 + 2876000^2 .

It is a cyclic number.

It is not a de Polignac number, because 11847797846449 - 2¹⁵ = 11847797813681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11847797846849) 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, 2070566494 + ... + 2070572215.

It is an arithmetic number, because the mean of its divisors is an integer number (2962984747005).

Almost surely, 2^{11847797846449} is an apocalyptic number.

It is an amenable number.

11847797846449 is a deficient number, since it is larger than the sum of its proper divisors (4141141571).

11847797846449 is an equidigital number, since it uses as much as digits as its factorization.

11847797846449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4141141570.

The product of its digits is 2731180032, while the sum is 79.

The spelling of 11847797846449 in words is "eleven trillion, eight hundred forty-seven billion, seven hundred ninety-seven million, eight hundred forty-six thousand, four hundred forty-nine".