40495920763729 has 2 divisors, whose sum is σ = 40495920763730. Its totient is φ = 40495920763728.

The previous prime is 40495920763609. The next prime is 40495920763763. The reversal of 40495920763729 is 92736702959404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37172518843329 + 3323401920400 = 6096927^2 + 1823020^2 .

It is a cyclic number.

It is not a de Polignac number, because 40495920763729 - 2⁹ = 40495920763217 is a prime.

It is not a weakly prime, because it can be changed into another prime (40495920769729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20247960381864 + 20247960381865.

It is an arithmetic number, because the mean of its divisors is an integer number (20247960381865).

Almost surely, 2^{40495920763729} is an apocalyptic number.

It is an amenable number.

40495920763729 is a deficient number, since it is larger than the sum of its proper divisors (1).

40495920763729 is an equidigital number, since it uses as much as digits as its factorization.

40495920763729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 205752960, while the sum is 67.

The spelling of 40495920763729 in words is "forty trillion, four hundred ninety-five billion, nine hundred twenty million, seven hundred sixty-three thousand, seven hundred twenty-nine".