11471411661 has 16 divisors (see below), whose sum is σ = 15717127104. Its totient is φ = 7436876544.

The previous prime is 11471411659. The next prime is 11471411719. The reversal of 11471411661 is 16611417411.

It is not a de Polignac number, because 11471411661 - 2¹ = 11471411659 is a prime.

It is a super-2 number, since 2×11471411661² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11471411641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184581 + ... + 238773.

It is an arithmetic number, because the mean of its divisors is an integer number (982320444).

Almost surely, 2^11471411661 is an apocalyptic number.

It is an amenable number.

11471411661 is a deficient number, since it is larger than the sum of its proper divisors (4245715443).

11471411661 is a wasteful number, since it uses less digits than its factorization.

11471411661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56140.

The product of its digits is 4032, while the sum is 33.

The spelling of 11471411661 in words is "eleven billion, four hundred seventy-one million, four hundred eleven thousand, six hundred sixty-one".