40531036709 has 2 divisors, whose sum is σ = 40531036710. Its totient is φ = 40531036708.

The previous prime is 40531036703. The next prime is 40531036739. The reversal of 40531036709 is 90763013504.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35002668100 + 5528368609 = 187090^2 + 74353^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40531036709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40531036703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20265518354 + 20265518355.

It is an arithmetic number, because the mean of its divisors is an integer number (20265518355).

Almost surely, 2^40531036709 is an apocalyptic number.

It is an amenable number.

40531036709 is a deficient number, since it is larger than the sum of its proper divisors (1).

40531036709 is an equidigital number, since it uses as much as digits as its factorization.

40531036709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 38.

The spelling of 40531036709 in words is "forty billion, five hundred thirty-one million, thirty-six thousand, seven hundred nine".