43138265078 has 16 divisors (see below), whose sum is σ = 69098002560. Its totient is φ = 20153582400.

The previous prime is 43138265077. The next prime is 43138265099. The reversal of 43138265078 is 87056283134.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43138265077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11994383 + ... + 11997978.

It is an arithmetic number, because the mean of its divisors is an integer number (4318625160).

Almost surely, 2^43138265078 is an apocalyptic number.

43138265078 is a deficient number, since it is larger than the sum of its proper divisors (25959737482).

43138265078 is a wasteful number, since it uses less digits than its factorization.

43138265078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23992423.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 43138265078 in words is "forty-three billion, one hundred thirty-eight million, two hundred sixty-five thousand, seventy-eight".