40261278484859 has 2 divisors, whose sum is σ = 40261278484860. Its totient is φ = 40261278484858.

The previous prime is 40261278484811. The next prime is 40261278484879. The reversal of 40261278484859 is 95848487216204.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40261278484859 - 2²⁴ = 40261261707643 is a prime.

It is not a weakly prime, because it can be changed into another prime (40261278484879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20130639242429 + 20130639242430.

It is an arithmetic number, because the mean of its divisors is an integer number (20130639242430).

Almost surely, 2^{40261278484859} is an apocalyptic number.

40261278484859 is a deficient number, since it is larger than the sum of its proper divisors (1).

40261278484859 is an equidigital number, since it uses as much as digits as its factorization.

40261278484859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 247726080, while the sum is 68.

The spelling of 40261278484859 in words is "forty trillion, two hundred sixty-one billion, two hundred seventy-eight million, four hundred eighty-four thousand, eight hundred fifty-nine".