40766640287 has 2 divisors, whose sum is σ = 40766640288. Its totient is φ = 40766640286.

The previous prime is 40766640281. The next prime is 40766640307. The reversal of 40766640287 is 78204666704.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40766640287 - 2¹⁸ = 40766378143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40766640281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20383320143 + 20383320144.

It is an arithmetic number, because the mean of its divisors is an integer number (20383320144).

Almost surely, 2^40766640287 is an apocalyptic number.

40766640287 is a deficient number, since it is larger than the sum of its proper divisors (1).

40766640287 is an equidigital number, since it uses as much as digits as its factorization.

40766640287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2709504, while the sum is 50.

The spelling of 40766640287 in words is "forty billion, seven hundred sixty-six million, six hundred forty thousand, two hundred eighty-seven".