11859517963 has 4 divisors (see below), whose sum is σ = 11860556400. Its totient is φ = 11858479528.

The previous prime is 11859517921. The next prime is 11859518009. The reversal of 11859517963 is 36971595811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11859517963 - 2²⁹ = 11322647051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11859517903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501895 + ... + 524992.

It is an arithmetic number, because the mean of its divisors is an integer number (2965139100).

Almost surely, 2^11859517963 is an apocalyptic number.

11859517963 is a deficient number, since it is larger than the sum of its proper divisors (1038437).

11859517963 is a wasteful number, since it uses less digits than its factorization.

11859517963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038436.

The product of its digits is 2041200, while the sum is 55.

The spelling of 11859517963 in words is "eleven billion, eight hundred fifty-nine million, five hundred seventeen thousand, nine hundred sixty-three".