11565479671 has 8 divisors (see below), whose sum is σ = 11608020144. Its totient is φ = 11522977920.

The previous prime is 11565479657. The next prime is 11565479693. The reversal of 11565479671 is 17697456511.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11565479671 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 (11565479621) 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, 676596 + ... + 693478.

It is an arithmetic number, because the mean of its divisors is an integer number (1451002518).

Almost surely, 2^11565479671 is an apocalyptic number.

11565479671 is a deficient number, since it is larger than the sum of its proper divisors (42540473).

11565479671 is a wasteful number, since it uses less digits than its factorization.

11565479671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19361.

The product of its digits is 1587600, while the sum is 52.

The spelling of 11565479671 in words is "eleven billion, five hundred sixty-five million, four hundred seventy-nine thousand, six hundred seventy-one".