40420420659 has 80 divisors (see below), whose sum is σ = 64294560000. Its totient is φ = 25235219520.

The previous prime is 40420420613. The next prime is 40420420693. The reversal of 40420420659 is 95602402404.

It is not a de Polignac number, because 40420420659 - 2¹² = 40420416563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40420020659) 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 in 79 ways as a sum of consecutive naturals, for example, 82322404 + ... + 82322894.

It is an arithmetic number, because the mean of its divisors is an integer number (803682000).

Almost surely, 2^40420420659 is an apocalyptic number.

40420420659 is a deficient number, since it is larger than the sum of its proper divisors (23874139341).

40420420659 is a wasteful number, since it uses less digits than its factorization.

40420420659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030 (or 1021 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 40420420659 in words is "forty billion, four hundred twenty million, four hundred twenty thousand, six hundred fifty-nine".