11657540564 has 12 divisors (see below), whose sum is σ = 20401533600. Its totient is φ = 5828530968.

The previous prime is 11657540551. The next prime is 11657540567. The reversal of 11657540564 is 46504575611.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11657540567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93347 + ... + 178965.

It is an arithmetic number, because the mean of its divisors is an integer number (1700127800).

Almost surely, 2^11657540564 is an apocalyptic number.

It is an amenable number.

11657540564 is a deficient number, since it is larger than the sum of its proper divisors (8743993036).

11657540564 is a wasteful number, since it uses less digits than its factorization.

11657540564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119662 (or 119660 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 44.

The spelling of 11657540564 in words is "eleven billion, six hundred fifty-seven million, five hundred forty thousand, five hundred sixty-four".