43078123778558 has 32 divisors (see below), whose sum is σ = 71690574960000. Its totient is φ = 19247922191520.

The previous prime is 43078123778551. The next prime is 43078123778653. The reversal of 43078123778558 is 85587732187034.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43078123778551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20681588 + ... + 22669016.

It is an arithmetic number, because the mean of its divisors is an integer number (2240330467500).

Almost surely, 2^{43078123778558} is an apocalyptic number.

43078123778558 is a deficient number, since it is larger than the sum of its proper divisors (28612451181442).

43078123778558 is a wasteful number, since it uses less digits than its factorization.

43078123778558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004200.

The product of its (nonzero) digits is 316108800, while the sum is 68.

The spelling of 43078123778558 in words is "forty-three trillion, seventy-eight billion, one hundred twenty-three million, seven hundred seventy-eight thousand, five hundred fifty-eight".