11564534476 has 24 divisors (see below), whose sum is σ = 22080489984. Its totient is φ = 5255953680.

The previous prime is 11564534473. The next prime is 11564534521. The reversal of 11564534476 is 67443546511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11564534473) 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, 625501 + ... + 643723.

It is an arithmetic number, because the mean of its divisors is an integer number (920020416).

Almost surely, 2^11564534476 is an apocalyptic number.

It is an amenable number.

11564534476 is a deficient number, since it is larger than the sum of its proper divisors (10515955508).

11564534476 is a wasteful number, since it uses less digits than its factorization.

11564534476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32661 (or 32659 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 46.

The spelling of 11564534476 in words is "eleven billion, five hundred sixty-four million, five hundred thirty-four thousand, four hundred seventy-six".