43005213497 has 4 divisors (see below), whose sum is σ = 45534931956. Its totient is φ = 40475495040.

The previous prime is 43005213469. The next prime is 43005213533. The reversal of 43005213497 is 79431250034.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18123621376 + 24881592121 = 134624^2 + 157739^2 .

It is a cyclic number.

It is not a de Polignac number, because 43005213497 - 2⁸ = 43005213241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43005213497.

It is not an unprimeable number, because it can be changed into a prime (43005218497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1264859204 + ... + 1264859237.

It is an arithmetic number, because the mean of its divisors is an integer number (11383732989).

Almost surely, 2^43005213497 is an apocalyptic number.

It is an amenable number.

43005213497 is a deficient number, since it is larger than the sum of its proper divisors (2529718459).

43005213497 is a wasteful number, since it uses less digits than its factorization.

43005213497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529718458.

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 43005213497 in words is "forty-three billion, five million, two hundred thirteen thousand, four hundred ninety-seven".