13550451447 has 16 divisors (see below), whose sum is σ = 20084707328. Its totient is φ = 8069747040.

The previous prime is 13550451391. The next prime is 13550451451. The reversal of 13550451447 is 74415405531.

It is not a de Polignac number, because 13550451447 - 2⁸ = 13550451191 is a prime.

It is a super-2 number, since 2×13550451447² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13550451487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5602783 + ... + 5605200.

It is an arithmetic number, because the mean of its divisors is an integer number (1255294208).

Almost surely, 2^13550451447 is an apocalyptic number.

13550451447 is a deficient number, since it is larger than the sum of its proper divisors (6534255881).

13550451447 is a wasteful number, since it uses less digits than its factorization.

13550451447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11208030.

The product of its (nonzero) digits is 168000, while the sum is 39.

Adding to 13550451447 its reverse (74415405531), we get a palindrome (87965856978).

The spelling of 13550451447 in words is "thirteen billion, five hundred fifty million, four hundred fifty-one thousand, four hundred forty-seven".