13551405431 has 4 divisors (see below), whose sum is σ = 13685577864. Its totient is φ = 13417233000.

The previous prime is 13551405391. The next prime is 13551405463. The reversal of 13551405431 is 13450415531.

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 13551405431 - 2¹⁰ = 13551404407 is a prime.

It is a super-2 number, since 2×13551405431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13551405481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67086065 + ... + 67086266.

It is an arithmetic number, because the mean of its divisors is an integer number (3421394466).

Almost surely, 2^13551405431 is an apocalyptic number.

13551405431 is a deficient number, since it is larger than the sum of its proper divisors (134172433).

13551405431 is a wasteful number, since it uses less digits than its factorization.

13551405431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134172432.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 13551405431 in words is "thirteen billion, five hundred fifty-one million, four hundred five thousand, four hundred thirty-one".