43240540455 has 24 divisors (see below), whose sum is σ = 85657452192. Its totient is φ = 19767104064.

The previous prime is 43240540439. The next prime is 43240540481. The reversal of 43240540455 is 55404504234.

43240540455 is a `hidden beast` number, since 4 + 3 + 240 + 5 + 404 + 5 + 5 = 666.

It is not a de Polignac number, because 43240540455 - 2⁴ = 43240540439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68635464 + ... + 68636093.

It is an arithmetic number, because the mean of its divisors is an integer number (3569060508).

Almost surely, 2^43240540455 is an apocalyptic number.

43240540455 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

43240540455 is a deficient number, since it is larger than the sum of its proper divisors (42416911737).

43240540455 is a wasteful number, since it uses less digits than its factorization.

43240540455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137271575 (or 137271572 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 36.

The spelling of 43240540455 in words is "forty-three billion, two hundred forty million, five hundred forty thousand, four hundred fifty-five".