11640305423644 has 12 divisors (see below), whose sum is σ = 21442667885800. Its totient is φ = 5513828884848.

The previous prime is 11640305423641. The next prime is 11640305423647. The reversal of 11640305423644 is 44632450304611.

It is an interprime number because it is at equal distance from previous prime (11640305423641) and next prime (11640305423647).

It is a self number, because there is not a number n which added to its sum of digits gives 11640305423644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11640305423641) 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, 76580956659 + ... + 76580956810.

Almost surely, 2^{11640305423644} is an apocalyptic number.

It is an amenable number.

11640305423644 is a deficient number, since it is larger than the sum of its proper divisors (9802362462156).

11640305423644 is a wasteful number, since it uses less digits than its factorization.

11640305423644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153161913492 (or 153161913490 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 11640305423644 in words is "eleven trillion, six hundred forty billion, three hundred five million, four hundred twenty-three thousand, six hundred forty-four".