40020894298867 has 2 divisors, whose sum is σ = 40020894298868. Its totient is φ = 40020894298866.

The previous prime is 40020894298843. The next prime is 40020894298937. The reversal of 40020894298867 is 76889249802004.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40020894298867 is a prime.

It is not a weakly prime, because it can be changed into another prime (40020894298837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20010447149433 + 20010447149434.

It is an arithmetic number, because the mean of its divisors is an integer number (20010447149434).

Almost surely, 2^{40020894298867} is an apocalyptic number.

40020894298867 is a deficient number, since it is larger than the sum of its proper divisors (1).

40020894298867 is an equidigital number, since it uses as much as digits as its factorization.

40020894298867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 111476736, while the sum is 67.

The spelling of 40020894298867 in words is "forty trillion, twenty billion, eight hundred ninety-four million, two hundred ninety-eight thousand, eight hundred sixty-seven".