43215716493 has 6 divisors (see below), whose sum is σ = 62422701614. Its totient is φ = 28810477656.

The previous prime is 43215716477. The next prime is 43215716503. The reversal of 43215716493 is 39461751234.

43215716493 is a `hidden beast` number, since 4 + 3 + 2 + 157 + 1 + 6 + 493 = 666.

It can be written as a sum of positive squares in only one way, i.e., 42272182404 + 943534089 = 205602^2 + 30717^2 .

It is not a de Polignac number, because 43215716493 - 2⁴ = 43215716477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43215716413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2400873130 + ... + 2400873147.

Almost surely, 2^43215716493 is an apocalyptic number.

It is an amenable number.

43215716493 is a deficient number, since it is larger than the sum of its proper divisors (19206985121).

43215716493 is a wasteful number, since it uses less digits than its factorization.

43215716493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4801746283 (or 4801746280 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The spelling of 43215716493 in words is "forty-three billion, two hundred fifteen million, seven hundred sixteen thousand, four hundred ninety-three".