11835226861 has 2 divisors, whose sum is σ = 11835226862. Its totient is φ = 11835226860.

The previous prime is 11835226849. The next prime is 11835226951. The reversal of 11835226861 is 16862253811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11631622500 + 203604361 = 107850^2 + 14269^2 .

It is a cyclic number.

It is not a de Polignac number, because 11835226861 - 2¹¹ = 11835224813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11835226661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5917613430 + 5917613431.

It is an arithmetic number, because the mean of its divisors is an integer number (5917613431).

Almost surely, 2^11835226861 is an apocalyptic number.

It is an amenable number.

11835226861 is a deficient number, since it is larger than the sum of its proper divisors (1).

11835226861 is an equidigital number, since it uses as much as digits as its factorization.

11835226861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 43.

The spelling of 11835226861 in words is "eleven billion, eight hundred thirty-five million, two hundred twenty-six thousand, eight hundred sixty-one".