11453663445021 has 64 divisors (see below), whose sum is σ = 19807061299200. Its totient is φ = 6406344302400.

The previous prime is 11453663444999. The next prime is 11453663445113. The reversal of 11453663445021 is 12054436635411.

11453663445021 is a `hidden beast` number, since 1 + 1 + 4 + 5 + 3 + 6 + 634 + 4 + 5 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 11453663445021 - 2¹¹ = 11453663442973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11453663445121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1205050 + ... + 4935531.

It is an arithmetic number, because the mean of its divisors is an integer number (309485332800).

Almost surely, 2^{11453663445021} is an apocalyptic number.

It is an amenable number.

11453663445021 is a deficient number, since it is larger than the sum of its proper divisors (8353397854179).

11453663445021 is a wasteful number, since it uses less digits than its factorization.

11453663445021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6140807 (or 6140801 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 11453663445021 in words is "eleven trillion, four hundred fifty-three billion, six hundred sixty-three million, four hundred forty-five thousand, twenty-one".