43215020545 has 8 divisors (see below), whose sum is σ = 51864132096. Its totient is φ = 34567944816.

The previous prime is 43215020533. The next prime is 43215020603. The reversal of 43215020545 is 54502051234.

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 43215020545 - 2¹³ = 43215012353 is a prime.

It is a Duffinian 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, 461857 + ... + 547486.

It is an arithmetic number, because the mean of its divisors is an integer number (6483016512).

Almost surely, 2^43215020545 is an apocalyptic number.

It is an amenable number.

43215020545 is a deficient number, since it is larger than the sum of its proper divisors (8649111551).

43215020545 is a wasteful number, since it uses less digits than its factorization.

43215020545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017911.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 43215020545 its reverse (54502051234), we get a palindrome (97717071779).

The spelling of 43215020545 in words is "forty-three billion, two hundred fifteen million, twenty thousand, five hundred forty-five".