13550445443 has 4 divisors (see below), whose sum is σ = 13588832328. Its totient is φ = 13512058560.

The previous prime is 13550445413. The next prime is 13550445449. The reversal of 13550445443 is 34454405531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13550445443 - 2²² = 13546251139 is a prime.

It is a super-2 number, since 2×13550445443² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13550445397 and 13550445406.

It is not an unprimeable number, because it can be changed into a prime (13550445449) 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, 19192913 + ... + 19193618.

It is an arithmetic number, because the mean of its divisors is an integer number (3397208082).

Almost surely, 2^13550445443 is an apocalyptic number.

13550445443 is a deficient number, since it is larger than the sum of its proper divisors (38386885).

13550445443 is an equidigital number, since it uses as much as digits as its factorization.

13550445443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38386884.

The product of its (nonzero) digits is 288000, while the sum is 38.

The spelling of 13550445443 in words is "thirteen billion, five hundred fifty million, four hundred forty-five thousand, four hundred forty-three".