11810856003 has 8 divisors (see below), whose sum is σ = 15793192128. Its totient is φ = 7851211944.

The previous prime is 11810855933. The next prime is 11810856007. The reversal of 11810856003 is 30065801811.

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

It is not a de Polignac number, because 11810856003 - 2¹² = 11810851907 is a prime.

It is a super-2 number, since 2×11810856003² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11810856007) 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, 5671801 + ... + 5673882.

It is an arithmetic number, because the mean of its divisors is an integer number (1974149016).

Almost surely, 2^11810856003 is an apocalyptic number.

11810856003 is a deficient number, since it is larger than the sum of its proper divisors (3982336125).

11810856003 is a wasteful number, since it uses less digits than its factorization.

11810856003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11346033.

The product of its (nonzero) digits is 5760, while the sum is 33.

The spelling of 11810856003 in words is "eleven billion, eight hundred ten million, eight hundred fifty-six thousand, three".