40287170387 has 2 divisors, whose sum is σ = 40287170388. Its totient is φ = 40287170386.

The previous prime is 40287170279. The next prime is 40287170393. The reversal of 40287170387 is 78307178204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40287170387 - 2¹² = 40287166291 is a prime.

It is not a weakly prime, because it can be changed into another prime (40287170587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20143585193 + 20143585194.

It is an arithmetic number, because the mean of its divisors is an integer number (20143585194).

Almost surely, 2^40287170387 is an apocalyptic number.

40287170387 is a deficient number, since it is larger than the sum of its proper divisors (1).

40287170387 is an equidigital number, since it uses as much as digits as its factorization.

40287170387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 526848, while the sum is 47.

The spelling of 40287170387 in words is "forty billion, two hundred eighty-seven million, one hundred seventy thousand, three hundred eighty-seven".