40218602779 has 2 divisors, whose sum is σ = 40218602780. Its totient is φ = 40218602778.

The previous prime is 40218602741. The next prime is 40218602803. The reversal of 40218602779 is 97720681204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40218602779 - 2⁷ = 40218602651 is a prime.

It is not a weakly prime, because it can be changed into another prime (40218608779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20109301389 + 20109301390.

It is an arithmetic number, because the mean of its divisors is an integer number (20109301390).

Almost surely, 2^40218602779 is an apocalyptic number.

40218602779 is a deficient number, since it is larger than the sum of its proper divisors (1).

40218602779 is an equidigital number, since it uses as much as digits as its factorization.

40218602779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 40218602779 in words is "forty billion, two hundred eighteen million, six hundred two thousand, seven hundred seventy-nine".