55431636516013 has 4 divisors (see below), whose sum is σ = 55433329169500. Its totient is φ = 55429943862528.

The previous prime is 55431636516007. The next prime is 55431636516049. The reversal of 55431636516013 is 31061563613455.

55431636516013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40933917753444 + 14497718762569 = 6397962^2 + 3807587^2 .

It is a cyclic number.

It is not a de Polignac number, because 55431636516013 - 2²⁹ = 55431099645101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55431636516913) 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 3 ways as a sum of consecutive naturals, for example, 846277620 + ... + 846343117.

It is an arithmetic number, because the mean of its divisors is an integer number (13858332292375).

Almost surely, 2^{55431636516013} is an apocalyptic number.

It is an amenable number.

55431636516013 is a deficient number, since it is larger than the sum of its proper divisors (1692653487).

55431636516013 is a wasteful number, since it uses less digits than its factorization.

55431636516013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692653486.

The product of its (nonzero) digits is 2916000, while the sum is 49.

The spelling of 55431636516013 in words is "fifty-five trillion, four hundred thirty-one billion, six hundred thirty-six million, five hundred sixteen thousand, thirteen".