40206810263 has 2 divisors, whose sum is σ = 40206810264. Its totient is φ = 40206810262.

The previous prime is 40206810227. The next prime is 40206810277. The reversal of 40206810263 is 36201860204.

40206810263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40206810263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40206830263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20103405131 + 20103405132.

It is an arithmetic number, because the mean of its divisors is an integer number (20103405132).

Almost surely, 2^40206810263 is an apocalyptic number.

40206810263 is a deficient number, since it is larger than the sum of its proper divisors (1).

40206810263 is an equidigital number, since it uses as much as digits as its factorization.

40206810263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 40206810263 in words is "forty billion, two hundred six million, eight hundred ten thousand, two hundred sixty-three".