11205280471 has 16 divisors (see below), whose sum is σ = 14108548608. Its totient is φ = 8644932000.

The previous prime is 11205280423. The next prime is 11205280477. The reversal of 11205280471 is 17408250211.

It is a cyclic number.

It is not a de Polignac number, because 11205280471 - 2¹¹ = 11205278423 is a prime.

It is a super-3 number, since 3×11205280471³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11205280477) 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, 712635 + ... + 728188.

It is an arithmetic number, because the mean of its divisors is an integer number (881784288).

Almost surely, 2^11205280471 is an apocalyptic number.

11205280471 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11205280471 is a deficient number, since it is larger than the sum of its proper divisors (2903268137).

11205280471 is a wasteful number, since it uses less digits than its factorization.

11205280471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440942.

The product of its (nonzero) digits is 4480, while the sum is 31.

The spelling of 11205280471 in words is "eleven billion, two hundred five million, two hundred eighty thousand, four hundred seventy-one".