11803619971 has 16 divisors (see below), whose sum is σ = 13872928608. Its totient is φ = 9901036800.

The previous prime is 11803619959. The next prime is 11803620121. The reversal of 11803619971 is 17991630811.

It is a cyclic number.

It is not a de Polignac number, because 11803619971 - 2²¹ = 11801522819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11803619371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358461 + ... + 390001.

It is an arithmetic number, because the mean of its divisors is an integer number (867058038).

Almost surely, 2^11803619971 is an apocalyptic number.

11803619971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11803619971 is a deficient number, since it is larger than the sum of its proper divisors (2069308637).

11803619971 is a wasteful number, since it uses less digits than its factorization.

11803619971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34182.

The product of its (nonzero) digits is 81648, while the sum is 46.

The spelling of 11803619971 in words is "eleven billion, eight hundred three million, six hundred nineteen thousand, nine hundred seventy-one".