11845669261 has 2 divisors, whose sum is σ = 11845669262. Its totient is φ = 11845669260.

The previous prime is 11845669259. The next prime is 11845669267. The reversal of 11845669261 is 16296654811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10788769161 + 1056900100 = 103869^2 + 32510^2 .

It is an emirp because it is prime and its reverse (16296654811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11845669261 - 2¹ = 11845669259 is a prime.

It is a super-2 number, since 2×11845669261² (a number of 21 digits) contains 22 as substring.

Together with 11845669259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11845669267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5922834630 + 5922834631.

It is an arithmetic number, because the mean of its divisors is an integer number (5922834631).

Almost surely, 2^11845669261 is an apocalyptic number.

It is an amenable number.

11845669261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11845669261 is an equidigital number, since it uses as much as digits as its factorization.

11845669261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 49.

The spelling of 11845669261 in words is "eleven billion, eight hundred forty-five million, six hundred sixty-nine thousand, two hundred sixty-one".