43542002513 has 4 divisors (see below), whose sum is σ = 43622487348. Its totient is φ = 43461517680.

The previous prime is 43542002509. The next prime is 43542002533. The reversal of 43542002513 is 31520024534.

It is a happy number.

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 21658125889 + 21883876624 = 147167^2 + 147932^2 .

It is a cyclic number.

It is not a de Polignac number, because 43542002513 - 2² = 43542002509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43542002533) 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 3 ways as a sum of consecutive naturals, for example, 40241606 + ... + 40242687.

It is an arithmetic number, because the mean of its divisors is an integer number (10905621837).

Almost surely, 2^43542002513 is an apocalyptic number.

It is an amenable number.

43542002513 is a deficient number, since it is larger than the sum of its proper divisors (80484835).

43542002513 is an equidigital number, since it uses as much as digits as its factorization.

43542002513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80484834.

The product of its (nonzero) digits is 14400, while the sum is 29.

The spelling of 43542002513 in words is "forty-three billion, five hundred forty-two million, two thousand, five hundred thirteen".