43478636455 has 4 divisors (see below), whose sum is σ = 52174363752. Its totient is φ = 34782909160.

The previous prime is 43478636447. The next prime is 43478636489. The reversal of 43478636455 is 55463687434.

It is a happy number.

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

It is not a de Polignac number, because 43478636455 - 2³ = 43478636447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43478636396 and 43478636405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4347863641 + ... + 4347863650.

It is an arithmetic number, because the mean of its divisors is an integer number (13043590938).

Almost surely, 2^43478636455 is an apocalyptic number.

43478636455 is a deficient number, since it is larger than the sum of its proper divisors (8695727297).

43478636455 is an equidigital number, since it uses as much as digits as its factorization.

43478636455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8695727296.

The product of its digits is 29030400, while the sum is 55.

The spelling of 43478636455 in words is "forty-three billion, four hundred seventy-eight million, six hundred thirty-six thousand, four hundred fifty-five".