40540331789 has 4 divisors (see below), whose sum is σ = 40540818624. Its totient is φ = 40539844956.

The previous prime is 40540331771. The next prime is 40540331827. The reversal of 40540331789 is 98713304504.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40540331789 - 2¹² = 40540327693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40540331729) 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, 83477 + ... + 296730.

It is an arithmetic number, because the mean of its divisors is an integer number (10135204656).

Almost surely, 2^40540331789 is an apocalyptic number.

It is an amenable number.

40540331789 is a deficient number, since it is larger than the sum of its proper divisors (486835).

40540331789 is a wasteful number, since it uses less digits than its factorization.

40540331789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486834.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 40540331789 in words is "forty billion, five hundred forty million, three hundred thirty-one thousand, seven hundred eighty-nine".