40878259571 has 2 divisors, whose sum is σ = 40878259572. Its totient is φ = 40878259570.

The previous prime is 40878259567. The next prime is 40878259589. The reversal of 40878259571 is 17595287804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40878259571 - 2² = 40878259567 is a prime.

It is not a weakly prime, because it can be changed into another prime (40878259511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20439129785 + 20439129786.

It is an arithmetic number, because the mean of its divisors is an integer number (20439129786).

Almost surely, 2^40878259571 is an apocalyptic number.

40878259571 is a deficient number, since it is larger than the sum of its proper divisors (1).

40878259571 is an equidigital number, since it uses as much as digits as its factorization.

40878259571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5644800, while the sum is 56.

The spelling of 40878259571 in words is "forty billion, eight hundred seventy-eight million, two hundred fifty-nine thousand, five hundred seventy-one".