40543539481 has 8 divisors (see below), whose sum is σ = 42700553280. Its totient is φ = 38388840048.

The previous prime is 40543539461. The next prime is 40543539511. The reversal of 40543539481 is 18493534504.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40543539481 is a prime.

It is a super-2 number, since 2×40543539481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40543539451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542566 + ... + 612751.

It is an arithmetic number, because the mean of its divisors is an integer number (5337569160).

Almost surely, 2^40543539481 is an apocalyptic number.

It is an amenable number.

40543539481 is a deficient number, since it is larger than the sum of its proper divisors (2157013799).

40543539481 is a wasteful number, since it uses less digits than its factorization.

40543539481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157183.

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 40543539481 in words is "forty billion, five hundred forty-three million, five hundred thirty-nine thousand, four hundred eighty-one".