11640640567 has 8 divisors (see below), whose sum is σ = 12374627760. Its totient is φ = 10918785600.

The previous prime is 11640640507. The next prime is 11640640577. The reversal of 11640640567 is 76504604611.

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-11640640567 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 (11640640507) 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, 3031078 + ... + 3034915.

It is an arithmetic number, because the mean of its divisors is an integer number (1546828470).

Almost surely, 2^11640640567 is an apocalyptic number.

11640640567 is a deficient number, since it is larger than the sum of its proper divisors (733987193).

11640640567 is a wasteful number, since it uses less digits than its factorization.

11640640567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6066113.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 11640640567 in words is "eleven billion, six hundred forty million, six hundred forty thousand, five hundred sixty-seven".