40543231513 has 4 divisors (see below), whose sum is σ = 40576221540. Its totient is φ = 40510241488.

The previous prime is 40543231511. The next prime is 40543231517. The reversal of 40543231513 is 31513234504.

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 35386124544 + 5157106969 = 188112^2 + 71813^2 .

It is a cyclic number.

It is not a de Polignac number, because 40543231513 - 2¹ = 40543231511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40543231511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16493170 + ... + 16495627.

It is an arithmetic number, because the mean of its divisors is an integer number (10144055385).

Almost surely, 2^40543231513 is an apocalyptic number.

It is an amenable number.

40543231513 is a deficient number, since it is larger than the sum of its proper divisors (32990027).

40543231513 is a wasteful number, since it uses less digits than its factorization.

40543231513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32990026.

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 40543231513 in words is "forty billion, five hundred forty-three million, two hundred thirty-one thousand, five hundred thirteen".