11898948805 has 8 divisors (see below), whose sum is σ = 15118664472. Its totient is φ = 8959208448.

The previous prime is 11898948799. The next prime is 11898948821. The reversal of 11898948805 is 50884989811.

11898948805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6407842401 + 5491106404 = 80049^2 + 74102^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11898948805 - 2⁵ = 11898948773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69993732 + ... + 69993901.

It is an arithmetic number, because the mean of its divisors is an integer number (1889833059).

Almost surely, 2^11898948805 is an apocalyptic number.

It is an amenable number.

11898948805 is a deficient number, since it is larger than the sum of its proper divisors (3219715667).

11898948805 is a wasteful number, since it uses less digits than its factorization.

11898948805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139987655.

The product of its (nonzero) digits is 6635520, while the sum is 61.

The spelling of 11898948805 in words is "eleven billion, eight hundred ninety-eight million, nine hundred forty-eight thousand, eight hundred five".