40036537549 has 4 divisors (see below), whose sum is σ = 40074202336. Its totient is φ = 39998872764.

The previous prime is 40036537547. The next prime is 40036537573. The reversal of 40036537549 is 94573563004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40036537549 - 2¹ = 40036537547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40036537499 and 40036537508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40036537547) 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, 18830799 + ... + 18832924.

It is an arithmetic number, because the mean of its divisors is an integer number (10018550584).

Almost surely, 2^40036537549 is an apocalyptic number.

It is an amenable number.

40036537549 is a deficient number, since it is larger than the sum of its proper divisors (37664787).

40036537549 is a wasteful number, since it uses less digits than its factorization.

40036537549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37664786.

The product of its (nonzero) digits is 1360800, while the sum is 46.

The spelling of 40036537549 in words is "forty billion, thirty-six million, five hundred thirty-seven thousand, five hundred forty-nine".