11810990953 has 2 divisors, whose sum is σ = 11810990954. Its totient is φ = 11810990952.

The previous prime is 11810990911. The next prime is 11810991013. The reversal of 11810990953 is 35909901811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11545072704 + 265918249 = 107448^2 + 16307^2 .

It is a cyclic number.

It is not a de Polignac number, because 11810990953 - 2⁹ = 11810990441 is a prime.

It is not a weakly prime, because it can be changed into another prime (11810990903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5905495476 + 5905495477.

It is an arithmetic number, because the mean of its divisors is an integer number (5905495477).

Almost surely, 2^11810990953 is an apocalyptic number.

It is an amenable number.

11810990953 is a deficient number, since it is larger than the sum of its proper divisors (1).

11810990953 is an equidigital number, since it uses as much as digits as its factorization.

11810990953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 46.

The spelling of 11810990953 in words is "eleven billion, eight hundred ten million, nine hundred ninety thousand, nine hundred fifty-three".