11485781851 has 2 divisors, whose sum is σ = 11485781852. Its totient is φ = 11485781850.

The previous prime is 11485781849. The next prime is 11485781887. The reversal of 11485781851 is 15818758411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11485781851 - 2¹ = 11485781849 is a prime.

Together with 11485781849, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11485781795 and 11485781804.

It is not a weakly prime, because it can be changed into another prime (11485781551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5742890925 + 5742890926.

It is an arithmetic number, because the mean of its divisors is an integer number (5742890926).

Almost surely, 2^11485781851 is an apocalyptic number.

11485781851 is a deficient number, since it is larger than the sum of its proper divisors (1).

11485781851 is an equidigital number, since it uses as much as digits as its factorization.

11485781851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 358400, while the sum is 49.

The spelling of 11485781851 in words is "eleven billion, four hundred eighty-five million, seven hundred eighty-one thousand, eight hundred fifty-one".