11836909901 has 2 divisors, whose sum is σ = 11836909902. Its totient is φ = 11836909900.

The previous prime is 11836909897. The next prime is 11836909907. The reversal of 11836909901 is 10990963811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6201405001 + 5635504900 = 78749^2 + 75070^2 .

It is a cyclic number.

It is not a de Polignac number, because 11836909901 - 2² = 11836909897 is a prime.

It is a super-2 number, since 2×11836909901² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11836909907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5918454950 + 5918454951.

It is an arithmetic number, because the mean of its divisors is an integer number (5918454951).

Almost surely, 2^11836909901 is an apocalyptic number.

It is an amenable number.

11836909901 is a deficient number, since it is larger than the sum of its proper divisors (1).

11836909901 is an equidigital number, since it uses as much as digits as its factorization.

11836909901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 47.

The spelling of 11836909901 in words is "eleven billion, eight hundred thirty-six million, nine hundred nine thousand, nine hundred one".