43278049385 has 8 divisors (see below), whose sum is σ = 51935998920. Its totient is φ = 34620879744.

The previous prime is 43278049307. The next prime is 43278049391. The reversal of 43278049385 is 58394087234.

It can be written as a sum of positive squares in 4 ways, for example, as 3671875216 + 39606174169 = 60596^2 + 199013^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43278049385 - 2²² = 43273855081 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65012 + ... + 301301.

It is an arithmetic number, because the mean of its divisors is an integer number (6491999865).

Almost surely, 2^43278049385 is an apocalyptic number.

It is an amenable number.

43278049385 is a deficient number, since it is larger than the sum of its proper divisors (8657949535).

43278049385 is a wasteful number, since it uses less digits than its factorization.

43278049385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389947.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 43278049385 in words is "forty-three billion, two hundred seventy-eight million, forty-nine thousand, three hundred eighty-five".