11630543553 has 6 divisors (see below), whose sum is σ = 16799674034. Its totient is φ = 7753695696.

The previous prime is 11630543543. The next prime is 11630543579. The reversal of 11630543553 is 35534503611.

11630543553 is a `hidden beast` number, since 1 + 1 + 63 + 0 + 5 + 43 + 553 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6590679489 + 5039864064 = 81183^2 + 70992^2 .

It is not a de Polignac number, because 11630543553 - 2⁵ = 11630543521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11630543503) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 646141300 + ... + 646141317.

Almost surely, 2^11630543553 is an apocalyptic number.

It is an amenable number.

11630543553 is a deficient number, since it is larger than the sum of its proper divisors (5169130481).

11630543553 is a wasteful number, since it uses less digits than its factorization.

11630543553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292282623 (or 1292282620 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The spelling of 11630543553 in words is "eleven billion, six hundred thirty million, five hundred forty-three thousand, five hundred fifty-three".