40737618957709 has 2 divisors, whose sum is σ = 40737618957710. Its totient is φ = 40737618957708.

The previous prime is 40737618957697. The next prime is 40737618957731. The reversal of 40737618957709 is 90775981673704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20755404756100 + 19982214201609 = 4555810^2 + 4470147^2 .

It is a cyclic number.

It is not a de Polignac number, because 40737618957709 - 2¹¹ = 40737618955661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40737618957769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20368809478854 + 20368809478855.

It is an arithmetic number, because the mean of its divisors is an integer number (20368809478855).

Almost surely, 2^{40737618957709} is an apocalyptic number.

It is an amenable number.

40737618957709 is a deficient number, since it is larger than the sum of its proper divisors (1).

40737618957709 is an equidigital number, since it uses as much as digits as its factorization.

40737618957709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560105280, while the sum is 73.

The spelling of 40737618957709 in words is "forty trillion, seven hundred thirty-seven billion, six hundred eighteen million, nine hundred fifty-seven thousand, seven hundred nine".