43023521378255 has 32 divisors (see below), whose sum is σ = 56368977192000. Its totient is φ = 31263580062720.

The previous prime is 43023521378239. The next prime is 43023521378267. The reversal of 43023521378255 is 55287312532034.

It is not a de Polignac number, because 43023521378255 - 2⁴ = 43023521378239 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 323037137 + ... + 323170293.

It is an arithmetic number, because the mean of its divisors is an integer number (1761530537250).

Almost surely, 2^{43023521378255} is an apocalyptic number.

43023521378255 is a deficient number, since it is larger than the sum of its proper divisors (13345455813745).

43023521378255 is a wasteful number, since it uses less digits than its factorization.

43023521378255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138059.

The product of its (nonzero) digits is 6048000, while the sum is 50.

The spelling of 43023521378255 in words is "forty-three trillion, twenty-three billion, five hundred twenty-one million, three hundred seventy-eight thousand, two hundred fifty-five".