11471904871 has 16 divisors (see below), whose sum is σ = 13470215680. Its totient is φ = 9563663520.

The previous prime is 11471904859. The next prime is 11471904877. The reversal of 11471904871 is 17840917411.

It is a cyclic number.

It is not a de Polignac number, because 11471904871 - 2¹⁷ = 11471773799 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 (11471904877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 837286 + ... + 850876.

It is an arithmetic number, because the mean of its divisors is an integer number (841888480).

Almost surely, 2^11471904871 is an apocalyptic number.

11471904871 is a deficient number, since it is larger than the sum of its proper divisors (1998310809).

11471904871 is a wasteful number, since it uses less digits than its factorization.

11471904871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16894.

The product of its (nonzero) digits is 56448, while the sum is 43.

The spelling of 11471904871 in words is "eleven billion, four hundred seventy-one million, nine hundred four thousand, eight hundred seventy-one".