11140686464 has 16 divisors (see below), whose sum is σ = 22194336570. Its totient is φ = 5570343168.

The previous prime is 11140686463. The next prime is 11140686521. The reversal of 11140686464 is 46468604111.

It can be written as a sum of positive squares in only one way, i.e., 7955212864 + 3185473600 = 89192^2 + 56440^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×11140686464² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11140686463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43518179 + ... + 43518434.

Almost surely, 2^11140686464 is an apocalyptic number.

It is an amenable number.

11140686464 is a deficient number, since it is larger than the sum of its proper divisors (11053650106).

11140686464 is an frugal number, since it uses more digits than its factorization.

11140686464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87036627 (or 87036615 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 11140686464 in words is "eleven billion, one hundred forty million, six hundred eighty-six thousand, four hundred sixty-four".