13551271047 has 24 divisors (see below), whose sum is σ = 20731057776. Its totient is φ = 8500467456.

The previous prime is 13551271021. The next prime is 13551271121. The reversal of 13551271047 is 74017215531.

13551271047 is a `hidden beast` number, since 1 + 35 + 512 + 7 + 104 + 7 = 666.

It is not a de Polignac number, because 13551271047 - 2³¹ = 11403787399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13551271847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 693708 + ... + 712974.

It is an arithmetic number, because the mean of its divisors is an integer number (863794074).

Almost surely, 2^13551271047 is an apocalyptic number.

13551271047 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13551271047 is a deficient number, since it is larger than the sum of its proper divisors (7179786729).

13551271047 is a wasteful number, since it uses less digits than its factorization.

13551271047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23887 (or 23884 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

Adding to 13551271047 its reverse (74017215531), we get a palindrome (87568486578).

The spelling of 13551271047 in words is "thirteen billion, five hundred fifty-one million, two hundred seventy-one thousand, forty-seven".