11861543703 has 8 divisors (see below), whose sum is σ = 15816149248. Its totient is φ = 7907316984.

The previous prime is 11861543699. The next prime is 11861543711. The reversal of 11861543703 is 30734516811.

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

It is not a de Polignac number, because 11861543703 - 2² = 11861543699 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11861543783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11101 + ... + 154422.

It is an arithmetic number, because the mean of its divisors is an integer number (1977018656).

Almost surely, 2^11861543703 is an apocalyptic number.

11861543703 is a deficient number, since it is larger than the sum of its proper divisors (3954605545).

11861543703 is a wasteful number, since it uses less digits than its factorization.

11861543703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189413.

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 11861543703 in words is "eleven billion, eight hundred sixty-one million, five hundred forty-three thousand, seven hundred three".